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/sinusplot/main.cpp
+++ b/examples/sinusplot/main.cpp
@@ -0,0 +1,225 @@
+/*****************************************************************************
+ * Qwt Examples - Copyright (C) 2002 Uwe Rathmann
+ * This file may be used under the terms of the 3-clause BSD License
+ *****************************************************************************/
+
+#include <QwtPlot>
+#include <QwtPlotMarker>
+#include <QwtPlotCurve>
+#include <QwtLegend>
+#include <QwtSyntheticPointData>
+#include <QwtPlotCanvas>
+#include <QwtPlotPanner>
+#include <QwtPlotMagnifier>
+#include <QwtSymbol>
+#include <QwtText>
+#include <QwtMath>
+
+#include <QApplication>
+#include <QPainterPath>
+#include <QLayout>
+
+//-----------------------------------------------------------------
+//      A simple example which shows how to use QwtPlot connected
+//      to a data class without any storage, calculating each values
+//      on the fly.
+//-----------------------------------------------------------------
+
+namespace
+{
+    class FunctionData : public QwtSyntheticPointData
+    {
+      public:
+        FunctionData( double( *fy )( double ) )
+            : QwtSyntheticPointData( 100 ),
+            m_y( fy )
+        {
+        }
+
+        virtual double y( double x ) const QWT_OVERRIDE
+        {
+            return m_y( x );
+        }
+
+      private:
+        double ( * m_y )( double );
+    };
+
+    class ArrowSymbol : public QwtSymbol
+    {
+      public:
+        ArrowSymbol()
+        {
+            QPen pen( Qt::black, 0 );
+            pen.setJoinStyle( Qt::MiterJoin );
+
+            setPen( pen );
+            setBrush( Qt::red );
+
+            QPainterPath path;
+            path.moveTo( 0, 8 );
+            path.lineTo( 0, 5 );
+            path.lineTo( -3, 5 );
+            path.lineTo( 0, 0 );
+            path.lineTo( 3, 5 );
+            path.lineTo( 0, 5 );
+
+            QTransform transform;
+            transform.rotate( -30.0 );
+            path = transform.map( path );
+
+            setPath( path );
+            setPinPoint( QPointF( 0, 0 ) );
+
+            setSize( 10, 14 );
+        }
+    };
+
+    class Plot : public QwtPlot
+    {
+      public:
+        Plot( QWidget* parent = NULL );
+
+      protected:
+        virtual void resizeEvent( QResizeEvent* ) QWT_OVERRIDE;
+
+      private:
+        void populate();
+        void updateGradient();
+    };
+}
+
+Plot::Plot( QWidget* parent )
+    : QwtPlot( parent )
+{
+    setAutoFillBackground( true );
+    setPalette( QPalette( QColor( 165, 193, 228 ) ) );
+    updateGradient();
+
+    setTitle( "A Simple QwtPlot Demonstration" );
+    insertLegend( new QwtLegend(), QwtPlot::RightLegend );
+
+    // axes
+    setAxisTitle( QwtAxis::XBottom, "x -->" );
+    setAxisScale( QwtAxis::XBottom, 0.0, 10.0 );
+
+    setAxisTitle( QwtAxis::YLeft, "y -->" );
+    setAxisScale( QwtAxis::YLeft, -1.0, 1.0 );
+
+    // canvas
+    QwtPlotCanvas* canvas = new QwtPlotCanvas();
+    canvas->setLineWidth( 1 );
+    canvas->setFrameStyle( QFrame::Box | QFrame::Plain );
+    canvas->setBorderRadius( 15 );
+
+    QPalette canvasPalette( Qt::white );
+    canvasPalette.setColor( QPalette::WindowText, QColor( 133, 190, 232 ) );
+    canvas->setPalette( canvasPalette );
+
+    setCanvas( canvas );
+
+    // panning with the left mouse button
+    ( void ) new QwtPlotPanner( canvas );
+
+    // zoom in/out with the wheel
+    ( void ) new QwtPlotMagnifier( canvas );
+
+    populate();
+}
+
+void Plot::populate()
+{
+    // Insert new curves
+    QwtPlotCurve* cSin = new QwtPlotCurve( "y = sin(x)" );
+    cSin->setRenderHint( QwtPlotItem::RenderAntialiased );
+    cSin->setLegendAttribute( QwtPlotCurve::LegendShowLine, true );
+    cSin->setPen( Qt::red );
+    cSin->attach( this );
+
+    QwtPlotCurve* cCos = new QwtPlotCurve( "y = cos(x)" );
+    cCos->setRenderHint( QwtPlotItem::RenderAntialiased );
+    cCos->setLegendAttribute( QwtPlotCurve::LegendShowLine, true );
+    cCos->setPen( Qt::blue );
+    cCos->attach( this );
+
+    // Create sin and cos data
+    cSin->setData( new FunctionData( std::sin ) );
+    cCos->setData( new FunctionData( std::cos ) );
+
+    // Insert markers
+
+    //  ...a horizontal line at y = 0...
+    QwtPlotMarker* mY = new QwtPlotMarker();
+    mY->setLabel( QString::fromLatin1( "y = 0" ) );
+    mY->setLabelAlignment( Qt::AlignRight | Qt::AlignTop );
+    mY->setLineStyle( QwtPlotMarker::HLine );
+    mY->setYValue( 0.0 );
+    mY->attach( this );
+
+    //  ...a vertical line at x = 2 * pi
+    QwtPlotMarker* mX = new QwtPlotMarker();
+    mX->setLabel( QString::fromLatin1( "x = 2 pi" ) );
+    mX->setLabelAlignment( Qt::AlignLeft | Qt::AlignBottom );
+    mX->setLabelOrientation( Qt::Vertical );
+    mX->setLineStyle( QwtPlotMarker::VLine );
+    mX->setLinePen( Qt::black, 0, Qt::DashDotLine );
+    mX->setXValue( 2.0 * M_PI );
+    mX->attach( this );
+
+    const double x = 7.7;
+
+    // an arrow at a specific position
+    QwtPlotMarker* mPos = new QwtPlotMarker( "Marker" );
+    mPos->setRenderHint( QwtPlotItem::RenderAntialiased, true );
+    mPos->setItemAttribute( QwtPlotItem::Legend, true );
+    mPos->setSymbol( new ArrowSymbol() );
+    mPos->setValue( QPointF( x, std::sin( x ) ) );
+    mPos->setLabel( QString( "x = %1" ).arg( x ) );
+    mPos->setLabelAlignment( Qt::AlignRight | Qt::AlignBottom );
+    mPos->attach( this );
+}
+
+void Plot::updateGradient()
+{
+    QPalette pal = palette();
+
+    const QColor buttonColor = pal.color( QPalette::Button );
+
+    QLinearGradient gradient( rect().topLeft(), rect().bottomLeft() );
+    gradient.setColorAt( 0.0, Qt::white );
+    gradient.setColorAt( 0.7, buttonColor );
+    gradient.setColorAt( 1.0, buttonColor );
+
+    pal.setBrush( QPalette::Window, gradient );
+    setPalette( pal );
+}
+
+void Plot::resizeEvent( QResizeEvent* event )
+{
+    QwtPlot::resizeEvent( event );
+
+    // Qt 4.7.1: QGradient::StretchToDeviceMode is buggy on X11
+    updateGradient();
+}
+
+int main( int argc, char* argv[] )
+{
+    QApplication app( argc, argv );
+
+    Plot* plot = new Plot();
+
+    // We put a dummy widget around to have
+    // so that Qt paints a widget background
+    // when resizing
+
+    QWidget window;
+
+    QHBoxLayout* layout = new QHBoxLayout( &window );
+    layout->setContentsMargins( 0, 0, 0, 0 );
+    layout->addWidget( plot );
+
+    window.resize( 600, 400 );
+    window.show();
+
+    return app.exec();
+}