QT5 -- Add Qwt 6.1-multiaxes

2026-02-14 16:39:57 +00:00 · 2013-12-09 10:02:47 +00:00
parent 03d3afdf53
commit 5abf8776f1
492 changed files with 97336 additions and 0 deletions
--- a/qwt/playground/scaleengine/transformplot.cpp
+++ b/qwt/playground/scaleengine/transformplot.cpp
@@ -0,0 +1,108 @@
+#include "transformplot.h"
+#include <qwt_curve_fitter.h>
+#include <qwt_plot_curve.h>
+#include <qwt_point_data.h>
+#include <qwt_transform.h>
+#include <qwt_legend.h>
+#include <qwt_legend_label.h>
+
+class TransformData: public QwtSyntheticPointData
+{
+public:
+    TransformData( QwtTransform *transform ):
+        QwtSyntheticPointData( 200 ),
+        d_transform( transform )
+    {
+    }
+
+    virtual ~TransformData()
+    {
+        delete d_transform;
+    }
+
+    const QwtTransform *transform() const
+    {
+        return d_transform;
+    }
+
+    virtual double y( double x ) const
+    {
+        const double min = 10.0;
+        const double max = 1000.0;
+
+        const double value = min + x * ( max - min );
+
+        const double s1 = d_transform->transform( min );
+        const double s2 = d_transform->transform( max );
+        const double s = d_transform->transform( value );
+
+        return ( s - s1 ) / ( s2 - s1 );
+    }
+
+private:
+    QwtTransform *d_transform;
+};
+
+TransformPlot::TransformPlot( QWidget *parent ):
+    QwtPlot( parent )
+{
+    setTitle( "Transformations" );
+    setCanvasBackground( Qt::white );
+
+    setAxisScale( QwtAxis::xBottom, 0.0, 1.0 );
+    setAxisScale( QwtAxis::yLeft, 0.0, 1.0 );
+
+    QwtLegend *legend = new QwtLegend();
+    legend->setDefaultItemMode( QwtLegendData::Checkable );
+    insertLegend( legend, QwtPlot::RightLegend );
+
+    connect( legend, SIGNAL( checked( const QVariant &, bool, int ) ),
+        this, SLOT( legendChecked( const QVariant &, bool ) ) );
+}
+
+void TransformPlot::insertTransformation( 
+    const QString &title, const QColor &color, QwtTransform *transform )
+{
+    QwtPlotCurve *curve = new QwtPlotCurve( title );
+    curve->setRenderHint( QwtPlotItem::RenderAntialiased, true );
+    curve->setPen( color, 2 );
+    curve->setData( new TransformData( transform ) );
+    curve->attach( this );
+}
+
+void TransformPlot::legendChecked( const QVariant &itemInfo, bool on )
+{
+	QwtPlotItem *plotItem = infoToItem( itemInfo );
+
+    setLegendChecked( plotItem );
+
+    if ( on && plotItem->rtti() == QwtPlotItem::Rtti_PlotCurve )
+    {
+        QwtPlotCurve *curve = static_cast<QwtPlotCurve *>( plotItem );
+        TransformData *data = static_cast<TransformData *>( curve->data() );
+
+        Q_EMIT selected( data->transform()->copy() );
+    }
+}
+
+void TransformPlot::setLegendChecked( QwtPlotItem *plotItem )
+{
+    const QwtPlotItemList items = itemList();
+    for ( int i = 0; i < items.size(); i++ )
+    {
+        QwtPlotItem *item = items[ i ];
+        if ( item->testItemAttribute( QwtPlotItem::Legend ) )
+        {
+            QwtLegend *lgd = qobject_cast<QwtLegend *>( legend() );
+
+            QwtLegendLabel *label = qobject_cast< QwtLegendLabel *>( 
+				lgd->legendWidget( itemToInfo( item ) ) );
+            if ( label )
+            {
+                lgd->blockSignals( true );
+                label->setChecked( item == plotItem );
+                lgd->blockSignals( false );
+            }
+        }
+    }
+}