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/playground/scaleengine/Plot.cpp
+++ b/playground/scaleengine/Plot.cpp
@@ -0,0 +1,79 @@
+/*****************************************************************************
+ * 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 <QwtPlotCurve>
+#include <QwtPlotGrid>
+#include <QwtSymbol>
+#include <QwtPlotPicker>
+#include <QwtScaleEngine>
+#include <QwtTransform>
+
+Plot::Plot( QWidget* parent )
+    : QwtPlot( parent )
+{
+    setCanvasBackground( Qt::white );
+
+    setAxisScale( QwtAxis::YLeft, 0.0, 10.0 );
+    setTransformation( new QwtNullTransform() );
+
+    populate();
+
+    QwtPlotPicker* picker = new QwtPlotPicker( canvas() );
+    picker->setTrackerMode( QwtPlotPicker::AlwaysOn );
+}
+
+void Plot::populate()
+{
+    QwtPlotGrid* grid = new QwtPlotGrid();
+    grid->setMinorPen( Qt::black, 0, Qt::DashLine );
+    grid->enableXMin( true );
+    grid->attach( this );
+
+    QwtPlotCurve* curve = new QwtPlotCurve();
+    curve->setTitle("Some Points");
+    curve->setPen( Qt::blue, 4 ),
+    curve->setRenderHint( QwtPlotItem::RenderAntialiased, true );
+
+    QwtSymbol* symbol = new QwtSymbol( QwtSymbol::Ellipse,
+        QBrush( Qt::yellow ), QPen( Qt::red, 2 ), QSize( 8, 8 ) );
+    curve->setSymbol( symbol );
+
+    QPolygonF points;
+    points << QPointF( 10.0, 4.4 )
+           << QPointF( 100.0, 3.0 ) << QPointF( 200.0, 4.5 )
+           << QPointF( 300.0, 6.8 ) << QPointF( 400.0, 7.9 )
+           << QPointF( 500.0, 7.1 ) << QPointF( 600.0, 7.9 )
+           << QPointF( 700.0, 7.1 ) << QPointF( 800.0, 5.4 )
+           << QPointF( 900.0, 2.8 ) << QPointF( 1000.0, 3.6 );
+    curve->setSamples( points );
+    curve->attach( this );
+}
+
+void Plot::setTransformation( QwtTransform* transform )
+{
+    QwtLinearScaleEngine* scaleEngine = new QwtLinearScaleEngine();
+    scaleEngine->setTransformation( transform );
+
+    setAxisScaleEngine( QwtAxis::XBottom, scaleEngine );
+
+    // we have to reassign the axis settings, because they are
+    // invalidated, when the scale engine has changed
+
+    QwtScaleDiv scaleDiv =
+        axisScaleEngine( QwtAxis::XBottom )->divideScale( 10.0, 1000.0, 8, 10 );
+
+    QList< double > ticks;
+    ticks += 10.0;
+    ticks += scaleDiv.ticks( QwtScaleDiv::MajorTick );
+    scaleDiv.setTicks( QwtScaleDiv::MajorTick, ticks );
+
+    setAxisScaleDiv( QwtAxis::XBottom, scaleDiv );
+
+    replot();
+}
+
+#include "moc_Plot.cpp"