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/scatterplot/Plot.cpp
+++ b/examples/scatterplot/Plot.cpp
@@ -0,0 +1,105 @@
+/*****************************************************************************
+ * Qwt Examples - Copyright (C) 2002 Uwe Rathmann
+ * This file may be used under the terms of the 3-clause BSD License
+ *****************************************************************************/
+
+#include "Plot.h"
+
+#include <QwtPlotMagnifier>
+#include <QwtPlotPanner>
+#include <QwtPlotPicker>
+#include <QwtPickerMachine>
+#include <QwtPlotCurve>
+#include <QwtText>
+
+#include <QPen>
+
+namespace
+{
+    class DistancePicker : public QwtPlotPicker
+    {
+      public:
+        DistancePicker( QWidget* canvas )
+            : QwtPlotPicker( canvas )
+        {
+            setTrackerMode( QwtPicker::ActiveOnly );
+            setStateMachine( new QwtPickerDragLineMachine() );
+            setRubberBand( QwtPlotPicker::PolygonRubberBand );
+        }
+
+        virtual QwtText trackerTextF( const QPointF& pos ) const QWT_OVERRIDE
+        {
+            QwtText text;
+
+            const QPolygon points = selection();
+            if ( !points.isEmpty() )
+            {
+                QString num;
+                num.setNum( QLineF( pos, invTransform( points[0] ) ).length() );
+
+                QColor bg( Qt::white );
+                bg.setAlpha( 200 );
+
+                text.setBackgroundBrush( QBrush( bg ) );
+                text.setText( num );
+            }
+            return text;
+        }
+    };
+}
+
+Plot::Plot( QWidget* parent )
+    : QwtPlot( parent )
+    , m_curve( NULL )
+{
+    canvas()->setStyleSheet(
+        "border: 2px solid Black;"
+        "border-radius: 15px;"
+        "background-color: qlineargradient( x1: 0, y1: 0, x2: 0, y2: 1,"
+            "stop: 0 LemonChiffon, stop: 1 PaleGoldenrod );"
+    );
+
+    // attach curve
+    m_curve = new QwtPlotCurve( "Scattered Points" );
+    m_curve->setPen( QColor( "Purple" ) );
+
+    // when using QwtPlotCurve::ImageBuffer simple dots can be
+    // rendered in parallel on multicore systems.
+    m_curve->setRenderThreadCount( 0 ); // 0: use QThread::idealThreadCount()
+
+    m_curve->attach( this );
+
+    setSymbol( NULL );
+
+    // panning with the left mouse button
+    (void )new QwtPlotPanner( canvas() );
+
+    // zoom in/out with the wheel
+    QwtPlotMagnifier* magnifier = new QwtPlotMagnifier( canvas() );
+    magnifier->setMouseButton( Qt::NoButton );
+
+    // distanve measurement with the right mouse button
+    DistancePicker* picker = new DistancePicker( canvas() );
+    picker->setMousePattern( QwtPlotPicker::MouseSelect1, Qt::RightButton );
+    picker->setRubberBandPen( QPen( Qt::blue ) );
+}
+
+void Plot::setSymbol( QwtSymbol* symbol )
+{
+    m_curve->setSymbol( symbol );
+
+    if ( symbol == NULL )
+    {
+        m_curve->setStyle( QwtPlotCurve::Dots );
+    }
+}
+
+void Plot::setSamples( const QVector< QPointF >& samples )
+{
+    m_curve->setPaintAttribute(
+        QwtPlotCurve::ImageBuffer, samples.size() > 1000 );
+
+    m_curve->setSamples( samples );
+}
+
+#include "moc_Plot.cpp"