Qwt 6.0.1 Support

Upgrade to QWT 6.0.1, but still uses a locally patched copy since support for 8 axes has not been included, despite it being a relatively simple patch. Fixes #634. Fixes #567.
2026-02-14 08:38:45 +00:00 · 2012-02-06 13:40:52 +01:00
parent 8c9a5ab148
commit 2f9130cd76
406 changed files with 39317 additions and 25831 deletions
--- a/qwt/examples/rasterview/plot.cpp
+++ b/qwt/examples/rasterview/plot.cpp
@@ -0,0 +1,146 @@
+#include "plot.h"
+#include <qwt_color_map.h>
+#include <qwt_plot_spectrogram.h>
+#include <qwt_plot_layout.h>
+#include <qwt_matrix_raster_data.h>
+#include <qwt_scale_widget.h>
+#include <qwt_plot_magnifier.h>
+#include <qwt_plot_panner.h>
+#include <qwt_plot_renderer.h>
+#include <qwt_plot_grid.h>
+#include <qwt_plot_canvas.h>
+#include <qfiledialog.h>
+#include <qimagewriter.h>
+
+class RasterData: public QwtMatrixRasterData
+{
+public:
+    RasterData()
+    {
+        const double matrix[] =
+        {
+            1, 2, 4, 1,
+            6, 3, 5, 2,
+            4, 2, 1, 5,
+            5, 4, 2, 3
+        };
+
+        QVector<double> values;
+        for ( uint i = 0; i < sizeof(matrix) / sizeof(double); i++ )
+            values += matrix[i];
+
+        const int numColumns = 4;
+        setValueMatrix(values, numColumns);
+
+        setInterval( Qt::XAxis,
+            QwtInterval( -0.5, 3.5, QwtInterval::ExcludeMaximum ) );
+        setInterval( Qt::YAxis,
+            QwtInterval( -0.5, 3.5, QwtInterval::ExcludeMaximum ) );
+        setInterval( Qt::ZAxis, QwtInterval(1.0, 6.0) );
+    }
+};
+
+class ColorMap: public QwtLinearColorMap
+{
+public:
+    ColorMap():
+        QwtLinearColorMap(Qt::darkBlue, Qt::darkRed)
+    {
+        addColorStop(0.2, Qt::blue);
+        addColorStop(0.4, Qt::cyan);
+        addColorStop(0.6, Qt::yellow);
+        addColorStop(0.8, Qt::red);
+    }
+};
+
+Plot::Plot(QWidget *parent):
+    QwtPlot(parent)
+{
+#if 0
+    QwtPlotGrid *grid = new QwtPlotGrid();
+    grid->setPen(QPen(Qt::DotLine));
+    grid->attach(this);
+#endif
+
+    d_spectrogram = new QwtPlotSpectrogram();
+    d_spectrogram->setRenderThreadCount(0); // use system specific thread count
+
+    d_spectrogram->setColorMap( new ColorMap() );
+
+    d_spectrogram->setData(new RasterData());
+    d_spectrogram->attach(this);
+
+    const QwtInterval zInterval = d_spectrogram->data()->interval( Qt::ZAxis );
+    // A color bar on the right axis
+    QwtScaleWidget *rightAxis = axisWidget(QwtPlot::yRight);
+    rightAxis->setColorBarEnabled(true);
+    rightAxis->setColorBarWidth(40);
+    rightAxis->setColorMap(zInterval, new ColorMap() );
+
+    setAxisScale(QwtPlot::yRight, zInterval.minValue(), zInterval.maxValue() );
+    enableAxis(QwtPlot::yRight);
+
+    plotLayout()->setAlignCanvasToScales(true);
+
+    setAxisScale(QwtPlot::xBottom, 0.0, 3.0);
+    setAxisMaxMinor(QwtPlot::xBottom, 0);
+    setAxisScale(QwtPlot::yLeft, 0.0, 3.0);
+    setAxisMaxMinor(QwtPlot::yLeft, 0);
+
+    QwtPlotMagnifier *magnifier = new QwtPlotMagnifier( canvas() );
+    magnifier->setAxisEnabled( QwtPlot::yRight, false);
+
+    QwtPlotPanner *panner = new QwtPlotPanner( canvas() );
+    panner->setAxisEnabled( QwtPlot::yRight, false);
+
+    canvas()->setBorderRadius( 10 );
+}
+
+void Plot::exportPlot()
+{
+    QString fileName = "rasterview.pdf";
+
+#ifndef QT_NO_FILEDIALOG
+    const QList<QByteArray> imageFormats =
+        QImageWriter::supportedImageFormats();
+
+    QStringList filter;
+    filter += "PDF Documents (*.pdf)";
+#ifndef QWT_NO_SVG
+    filter += "SVG Documents (*.svg)";
+#endif
+    filter += "Postscript Documents (*.ps)";
+
+    if ( imageFormats.size() > 0 )
+    {
+        QString imageFilter("Images (");
+        for ( int i = 0; i < imageFormats.size(); i++ )
+        {
+            if ( i > 0 )
+                imageFilter += " ";
+            imageFilter += "*.";
+            imageFilter += imageFormats[i];
+        }
+        imageFilter += ")";
+
+        filter += imageFilter;
+    }
+
+    fileName = QFileDialog::getSaveFileName(
+        this, "Export File Name", fileName,
+        filter.join(";;"), NULL, QFileDialog::DontConfirmOverwrite);
+#endif
+    if ( !fileName.isEmpty() )
+    {
+        QwtPlotRenderer renderer;
+        renderer.renderDocument(this, fileName, QSizeF(300, 200), 85);
+    }
+}
+
+void Plot::setResampleMode(int mode)
+{
+    RasterData *data = (RasterData *)d_spectrogram->data();
+    data->setResampleMode( (QwtMatrixRasterData::ResampleMode) mode);
+
+    replot();
+}