Add files from zip

examples/rasterview/Plot.cpp

@@ -0,0 +1,124 @@
+/*****************************************************************************
+ * 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 <QwtColorMap>
+#include <QwtPlotSpectrogram>
+#include <QwtPlotLayout>
+#include <QwtMatrixRasterData>
+#include <QwtScaleWidget>
+#include <QwtPlotMagnifier>
+#include <QwtPlotPanner>
+#include <QwtPlotRenderer>
+#include <QwtPlotGrid>
+#include <QwtPlotCanvas>
+#include <QwtInterval>
+
+namespace
+{
+    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 )
+{
+    QwtPlotCanvas* canvas = new QwtPlotCanvas();
+    canvas->setBorderRadius( 10 );
+    setCanvas( canvas );
+
+#if 0
+    QwtPlotGrid* grid = new QwtPlotGrid();
+    grid->setPen( Qt::DotLine );
+    grid->attach( this );
+#endif
+
+    m_spectrogram = new QwtPlotSpectrogram();
+    m_spectrogram->setRenderThreadCount( 0 ); // use system specific thread count
+
+    m_spectrogram->setColorMap( new ColorMap() );
+
+    m_spectrogram->setData( new RasterData() );
+    m_spectrogram->attach( this );
+
+    const QwtInterval zInterval = m_spectrogram->data()->interval( Qt::ZAxis );
+    // A color bar on the right axis
+    QwtScaleWidget* rightAxis = axisWidget( QwtAxis::YRight );
+    rightAxis->setColorBarEnabled( true );
+    rightAxis->setColorBarWidth( 40 );
+    rightAxis->setColorMap( zInterval, new ColorMap() );
+
+    setAxisScale( QwtAxis::YRight, zInterval.minValue(), zInterval.maxValue() );
+    setAxisVisible( QwtAxis::YRight );
+
+    plotLayout()->setAlignCanvasToScales( true );
+
+    setAxisScale( QwtAxis::XBottom, 0.0, 3.0 );
+    setAxisMaxMinor( QwtAxis::XBottom, 0 );
+    setAxisScale( QwtAxis::YLeft, 0.0, 3.0 );
+    setAxisMaxMinor( QwtAxis::YLeft, 0 );
+
+    QwtPlotMagnifier* magnifier = new QwtPlotMagnifier( canvas );
+    magnifier->setAxisEnabled( QwtAxis::YRight, false );
+
+    QwtPlotPanner* panner = new QwtPlotPanner( canvas );
+    panner->setAxisEnabled( QwtAxis::YRight, false );
+}
+
+void Plot::exportPlot()
+{
+    QwtPlotRenderer renderer;
+    renderer.exportTo( this, "rasterview.pdf" );
+}
+
+void Plot::setResampleMode( int mode )
+{
+    RasterData* rasterData = static_cast< RasterData* >( m_spectrogram->data() );
+    rasterData->setResampleMode(
+        static_cast< QwtMatrixRasterData::ResampleMode >( mode ) );
+
+    replot();
+}
+
+#include "moc_Plot.cpp"

examples/rasterview/Plot.h

@@ -0,0 +1,25 @@
+/*****************************************************************************
+ * Qwt Examples - Copyright (C) 2002 Uwe Rathmann
+ * This file may be used under the terms of the 3-clause BSD License
+ *****************************************************************************/
+
+#pragma once
+
+#include <QwtPlot>
+
+class QwtPlotSpectrogram;
+
+class Plot : public QwtPlot
+{
+    Q_OBJECT
+
+  public:
+    Plot( QWidget* = NULL );
+
+  public Q_SLOTS:
+    void exportPlot();
+    void setResampleMode( int );
+
+  private:
+    QwtPlotSpectrogram* m_spectrogram;
+};

examples/rasterview/main.cpp

@@ -0,0 +1,67 @@
+/*****************************************************************************
+ * 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 <QApplication>
+#include <QMainWindow>
+#include <QToolBar>
+#include <QToolButton>
+#include <QComboBox>
+#include <QLabel>
+
+namespace
+{
+    class MainWindow : public QMainWindow
+    {
+      public:
+        MainWindow( QWidget* parent = NULL )
+            : QMainWindow( parent )
+        {
+            Plot* plot = new Plot( this );
+            setCentralWidget( plot );
+
+            QToolBar* toolBar = new QToolBar( this );
+
+            QComboBox* rasterBox = new QComboBox( toolBar );
+            rasterBox->addItem( "Wikipedia" );
+
+            toolBar->addWidget( new QLabel( "Data ", toolBar ) );
+            toolBar->addWidget( rasterBox );
+            toolBar->addSeparator();
+
+            QComboBox* modeBox = new QComboBox( toolBar );
+            modeBox->addItem( "Nearest Neighbour" );
+            modeBox->addItem( "Bilinear Interpolation" );
+            modeBox->addItem( "Bicubic Interpolation" );
+
+            toolBar->addWidget( new QLabel( "Resampling ", toolBar ) );
+            toolBar->addWidget( modeBox );
+
+            toolBar->addSeparator();
+
+            QToolButton* btnExport = new QToolButton( toolBar );
+            btnExport->setText( "Export" );
+            btnExport->setToolButtonStyle( Qt::ToolButtonTextUnderIcon );
+            toolBar->addWidget( btnExport );
+
+            addToolBar( toolBar );
+
+            connect( modeBox, SIGNAL(activated(int)), plot, SLOT(setResampleMode(int)) );
+            connect( btnExport, SIGNAL(clicked()), plot, SLOT(exportPlot()) );
+        }
+    };
+}
+
+int main( int argc, char* argv[] )
+{
+    QApplication app( argc, argv );
+
+    MainWindow window;
+    window.resize( 600, 400 );
+    window.show();
+
+    return app.exec();
+}

examples/rasterview/rasterview.pro

@@ -0,0 +1,15 @@
+######################################################################
+# Qwt Examples - Copyright (C) 2002 Uwe Rathmann
+# This file may be used under the terms of the 3-clause BSD License
+######################################################################
+
+include( $${PWD}/../examples.pri )
+
+TARGET   = rasterview
+
+HEADERS = \
+     Plot.h 
+
+SOURCES = \
+    Plot.cpp \
+    main.cpp