Released version 6.1.3

2018-08-02 11:01:31 -04:00 · 2018-08-02 11:01:31 -04:00 · a94503cb82
commit a94503cb82
1885 changed files with 276310 additions and 0 deletions
--- a/playground/rescaler/mainwindow.cpp
+++ b/playground/rescaler/mainwindow.cpp
@ -0,0 +1,146 @@
+#include <cstdlib>
+#include <qgroupbox.h>
+#include <qcombobox.h>
+#include <qlayout.h>
+#include <qstatusbar.h>
+#include <qlabel.h>
+#include <qwt_plot.h>
+#include <qwt_plot_rescaler.h>
+#include <qwt_scale_div.h>
+#include "plot.h"
+#include "mainwindow.h"
+
+MainWindow::MainWindow()
+{
+    QFrame *w = new QFrame( this );
+
+    QWidget *panel = createPanel( w );
+    panel->setFixedWidth( 2 * panel->sizeHint().width() );
+    d_plot = createPlot( w );
+
+    QHBoxLayout *layout = new QHBoxLayout( w );
+    layout->setMargin( 0 );
+    layout->addWidget( panel, 0 );
+    layout->addWidget( d_plot, 10 );
+
+    setCentralWidget( w );
+
+    setRescaleMode( 0 );
+
+    ( void )statusBar();
+}
+
+QWidget *MainWindow::createPanel( QWidget *parent )
+{
+    QGroupBox *panel = new QGroupBox( "Navigation Panel", parent );
+
+    QComboBox *rescaleBox = new QComboBox( panel );
+    rescaleBox->setEditable( false );
+    rescaleBox->insertItem( KeepScales, "None" );
+    rescaleBox->insertItem( Fixed, "Fixed" );
+    rescaleBox->insertItem( Expanding, "Expanding" );
+    rescaleBox->insertItem( Fitting, "Fitting" );
+
+    connect( rescaleBox, SIGNAL( activated( int ) ), SLOT( setRescaleMode( int ) ) );
+
+    d_rescaleInfo = new QLabel( panel );
+    d_rescaleInfo->setSizePolicy(
+        QSizePolicy::Expanding, QSizePolicy::Expanding );
+    d_rescaleInfo->setWordWrap( true );
+
+    QVBoxLayout *layout = new QVBoxLayout( panel );
+    layout->addWidget( rescaleBox );
+    layout->addWidget( d_rescaleInfo );
+    layout->addStretch( 10 );
+
+    return panel;
+}
+
+Plot *MainWindow::createPlot( QWidget *parent )
+{
+    Plot *plot = new Plot( parent, QwtInterval( 0.0, 1000.0 ) );
+    plot->replot();
+
+    d_rescaler = new QwtPlotRescaler( plot->canvas() );
+    d_rescaler->setReferenceAxis( QwtPlot::xBottom );
+    d_rescaler->setAspectRatio( QwtPlot::yLeft, 1.0 );
+    d_rescaler->setAspectRatio( QwtPlot::yRight, 0.0 );
+    d_rescaler->setAspectRatio( QwtPlot::xTop, 0.0 );
+
+    for ( int axis = 0; axis < QwtPlot::axisCnt; axis++ )
+        d_rescaler->setIntervalHint( axis, QwtInterval( 0.0, 1000.0 ) );
+
+    connect( plot, SIGNAL( resized( double, double ) ),
+        SLOT( showRatio( double, double ) ) );
+    return plot;
+}
+
+void MainWindow::setRescaleMode( int mode )
+{
+    bool doEnable = true;
+    QString info;
+    QRectF rectOfInterest;
+    QwtPlotRescaler::ExpandingDirection direction = QwtPlotRescaler::ExpandUp;
+
+    switch( mode )
+    {
+        case KeepScales:
+        {
+            doEnable = false;
+            info = "All scales remain unchanged, when the plot is resized";
+            break;
+        }
+        case Fixed:
+        {
+            d_rescaler->setRescalePolicy( QwtPlotRescaler::Fixed );
+            info = "The scale of the bottom axis remains unchanged, "
+                "when the plot is resized. All other scales are changed, "
+                "so that a pixel on screen means the same distance for"
+                "all scales.";
+            break;
+        }
+        case Expanding:
+        {
+            d_rescaler->setRescalePolicy( QwtPlotRescaler::Expanding );
+            info = "The scales of all axis are shrinked/expanded, when "
+                "resizing the plot, keeping the distance that is represented "
+                "by one pixel.";
+            d_rescaleInfo->setText( "Expanding" );
+            break;
+        }
+        case Fitting:
+        {
+            d_rescaler->setRescalePolicy( QwtPlotRescaler::Fitting );
+            const QwtInterval xIntv =
+                d_rescaler->intervalHint( QwtPlot::xBottom );
+            const QwtInterval yIntv =
+                d_rescaler->intervalHint( QwtPlot::yLeft );
+
+            rectOfInterest = QRectF( xIntv.minValue(), yIntv.minValue(),
+                xIntv.width(), yIntv.width() );
+            direction = QwtPlotRescaler::ExpandBoth;
+
+            info = "Fitting";
+            break;
+        }
+    }
+
+    d_plot->setRectOfInterest( rectOfInterest );
+
+    d_rescaleInfo->setText( info );
+    d_rescaler->setEnabled( doEnable );
+    for ( int axis = 0; axis < QwtPlot::axisCnt; axis++ )
+        d_rescaler->setExpandingDirection( direction );
+
+    if ( doEnable )
+        d_rescaler->rescale();
+    else
+        d_plot->replot();
+}
+
+void MainWindow::showRatio( double xRatio, double yRatio )
+{
+    const QString msg = QString( "%1, %2" ).arg( xRatio ).arg( yRatio );
+    statusBar()->showMessage( msg );
+}
+