Released version 6.1.3

playground/svgmap/main.cpp

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+#include <qapplication.h>
+#include <qmainwindow.h>
+#include <qtoolbar.h>
+#include <qtoolbutton.h>
+#include "plot.h"
+
+class MainWindow: public QMainWindow
+{
+public:
+    MainWindow( const QString &fileName )
+    {
+        Plot *plot = new Plot( this );
+        if ( !fileName.isEmpty() )
+            plot->loadSVG( fileName );
+
+        setCentralWidget( plot );
+
+#ifndef QT_NO_FILEDIALOG
+
+        QToolBar *toolBar = new QToolBar( this );
+
+        QToolButton *btnLoad = new QToolButton( toolBar );
+
+        btnLoad->setText( "Load SVG" );
+        btnLoad->setToolButtonStyle( Qt::ToolButtonTextUnderIcon );
+        toolBar->addWidget( btnLoad );
+
+        addToolBar( toolBar );
+
+        connect( btnLoad, SIGNAL( clicked() ), plot, SLOT( loadSVG() ) );
+#endif
+    }
+};
+
+int main( int argc, char **argv )
+{
+    QApplication a( argc, argv );
+
+    QString fileName;
+    if ( argc > 1 )
+        fileName = argv[1];
+
+    MainWindow w( fileName );
+    w.resize( 600, 400 );
+    w.show();
+
+    int rv = a.exec();
+    return rv;
+}

playground/svgmap/plot.cpp

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+#include <qfiledialog.h>
+#include <qwt_plot_svgitem.h>
+#include <qwt_plot_grid.h>
+#include <qwt_plot_layout.h>
+#include <qwt_plot_canvas.h>
+#include <qwt_plot_panner.h>
+#include <qwt_plot_magnifier.h>
+#include "plot.h"
+
+Plot::Plot( QWidget *parent ):
+    QwtPlot( parent ),
+    d_mapItem( NULL ),
+    d_mapRect( 0.0, 0.0, 100.0, 100.0 ) // something
+{
+#if 1
+    /*
+       d_mapRect is only a reference for zooming, but
+       the ranges are nothing useful for the user. So we
+       hide the axes.
+     */
+    plotLayout()->setCanvasMargin( 0 );
+    for ( int axis = 0; axis < QwtPlot::axisCnt; axis++ )
+        enableAxis( axis, false );
+#else
+    QwtPlotGrid *grid = new QwtPlotGrid();
+    grid->attach( this );
+#endif
+
+    /*
+      Navigation:
+
+      Left Mouse Button: Panning
+      Mouse Wheel:       Zooming In/Out
+      Right Mouse Button: Reset to initial
+    */
+
+    ( void )new QwtPlotPanner( canvas() );
+    ( void )new QwtPlotMagnifier( canvas() );
+
+    canvas()->setFocusPolicy( Qt::WheelFocus );
+    rescale();
+}
+
+#ifndef QT_NO_FILEDIALOG
+
+void Plot::loadSVG()
+{
+    QString dir;
+    const QString fileName = QFileDialog::getOpenFileName( NULL,
+        "Load a Scaleable Vector Graphic (SVG) Map",
+        dir, "SVG Files (*.svg)" );
+
+    if ( !fileName.isEmpty() )
+        loadSVG( fileName );
+}
+
+#endif
+
+void Plot::loadSVG( const QString &fileName )
+{
+    if ( d_mapItem == NULL )
+    {
+        d_mapItem = new QwtPlotSvgItem();
+        d_mapItem->attach( this );
+    }
+
+    d_mapItem->loadFile( d_mapRect, fileName );
+    rescale();
+
+    replot();
+}
+
+void Plot::rescale()
+{
+    setAxisScale( QwtPlot::xBottom,
+        d_mapRect.left(), d_mapRect.right() );
+    setAxisScale( QwtPlot::yLeft,
+        d_mapRect.top(), d_mapRect.bottom() );
+}

playground/svgmap/plot.h

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+#include <qwt_plot.h>
+#include <qrect.h>
+
+class QwtPlotSvgItem;
+
+class Plot: public QwtPlot
+{
+    Q_OBJECT
+
+public:
+    Plot( QWidget * = NULL );
+
+public Q_SLOTS:
+
+#ifndef QT_NO_FILEDIALOG
+    void loadSVG();
+#endif
+
+    void loadSVG( const QString & );
+
+private:
+    void rescale();
+
+    QwtPlotSvgItem *d_mapItem;
+    const QRectF d_mapRect;
+};

playground/svgmap/svgmap.pro

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+################################################################
+# Qwt Widget Library
+# Copyright (C) 1997   Josef Wilgen
+# Copyright (C) 2002   Uwe Rathmann
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the Qwt License, Version 1.0
+################################################################
+
+include( $${PWD}/../playground.pri )
+
+!contains(QWT_CONFIG, QwtSvg) {
+
+    message(Are you trying to build Qwt with the Qt Creator as Shadow Build ?)
+    error(Qwt is configured without SVG support !)
+}
+
+TARGET   = svgmap
+QT      += svg
+
+HEADERS = \
+    plot.h
+
+SOURCES = \
+    plot.cpp \
+    main.cpp