Add files from zip

2023-10-31 09:22:42 +01:00
parent 6bacdc5f6d
commit 4dae68036f
2788 changed files with 492537 additions and 0 deletions
--- a/playground/rescaler/MainWindow.cpp
+++ b/playground/rescaler/MainWindow.cpp
@@ -0,0 +1,153 @@
+/*****************************************************************************
+ * Qwt Examples - Copyright (C) 2002 Uwe Rathmann
+ * This file may be used under the terms of the 3-clause BSD License
+ *****************************************************************************/
+
+#include "MainWindow.h"
+#include "Plot.h"
+
+#include <QwtPlot>
+#include <QwtPlotRescaler>
+#include <QwtInterval>
+
+#include <QGroupBox>
+#include <QComboBox>
+#include <QLayout>
+#include <QStatusBar>
+#include <QLabel>
+
+MainWindow::MainWindow()
+{
+    QFrame* w = new QFrame( this );
+
+    QWidget* panel = createPanel( w );
+    panel->setFixedWidth( 2 * panel->sizeHint().width() );
+    m_plot = createPlot( w );
+
+    QHBoxLayout* layout = new QHBoxLayout( w );
+    layout->setContentsMargins( QMargins() );
+    layout->addWidget( panel, 0 );
+    layout->addWidget( m_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)) );
+
+    m_rescaleInfo = new QLabel( panel );
+    m_rescaleInfo->setSizePolicy(
+        QSizePolicy::Expanding, QSizePolicy::Expanding );
+    m_rescaleInfo->setWordWrap( true );
+
+    QVBoxLayout* layout = new QVBoxLayout( panel );
+    layout->addWidget( rescaleBox );
+    layout->addWidget( m_rescaleInfo );
+    layout->addStretch( 10 );
+
+    return panel;
+}
+
+Plot* MainWindow::createPlot( QWidget* parent )
+{
+    Plot* plot = new Plot( parent, QwtInterval( 0.0, 1000.0 ) );
+    plot->replot();
+
+    m_rescaler = new QwtPlotRescaler( plot->canvas() );
+    m_rescaler->setReferenceAxis( QwtAxis::XBottom );
+    m_rescaler->setAspectRatio( QwtAxis::YLeft, 1.0 );
+    m_rescaler->setAspectRatio( QwtAxis::YRight, 0.0 );
+    m_rescaler->setAspectRatio( QwtAxis::XTop, 0.0 );
+
+    for ( int axisPos = 0; axisPos < QwtAxis::AxisPositions; axisPos++ )
+        m_rescaler->setIntervalHint( axisPos, 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:
+        {
+            m_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:
+        {
+            m_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.";
+            m_rescaleInfo->setText( "Expanding" );
+            break;
+        }
+        case Fitting:
+        {
+            m_rescaler->setRescalePolicy( QwtPlotRescaler::Fitting );
+            const QwtInterval xIntv =
+                m_rescaler->intervalHint( QwtAxis::XBottom );
+            const QwtInterval yIntv =
+                m_rescaler->intervalHint( QwtAxis::YLeft );
+
+            rectOfInterest = QRectF( xIntv.minValue(), yIntv.minValue(),
+                xIntv.width(), yIntv.width() );
+            direction = QwtPlotRescaler::ExpandBoth;
+
+            info = "Fitting";
+            break;
+        }
+    }
+
+    m_plot->setRectOfInterest( rectOfInterest );
+
+    m_rescaleInfo->setText( info );
+    m_rescaler->setEnabled( doEnable );
+    for ( int axisPos = 0; axisPos < QwtAxis::AxisPositions; axisPos++ )
+        m_rescaler->setExpandingDirection( direction );
+
+    if ( doEnable )
+        m_rescaler->rescale();
+    else
+        m_plot->replot();
+}
+
+void MainWindow::showRatio( double xRatio, double yRatio )
+{
+    const QString msg = QString( "%1, %2" ).arg( xRatio ).arg( yRatio );
+    statusBar()->showMessage( msg );
+}
+
+#include "moc_MainWindow.cpp"