Add files from zip

examples/oscilloscope/MainWindow.cpp

@@ -0,0 +1,77 @@
+/*****************************************************************************
+ * 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 "Knob.h"
+#include "WheelBox.h"
+
+#include <QLayout>
+
+MainWindow::MainWindow( QWidget* parent )
+    : QWidget( parent )
+{
+    const double intervalLength = 10.0; // seconds
+
+    m_plot = new Plot();
+    m_plot->setIntervalLength( intervalLength );
+
+    m_amplitudeKnob = new Knob( "Amplitude", 0.0, 200.0 );
+    m_amplitudeKnob->setValue( 160.0 );
+
+    m_frequencyKnob = new Knob( "Frequency [Hz]", 0.1, 20.0 );
+    m_frequencyKnob->setValue( 17.8 );
+
+    m_intervalWheel = new WheelBox( "Displayed [s]", 1.0, 100.0, 1.0 );
+    m_intervalWheel->setValue( intervalLength );
+
+    m_timerWheel = new WheelBox( "Sample Interval [ms]", 0.0, 20.0, 0.1 );
+    m_timerWheel->setValue( 10.0 );
+
+    QVBoxLayout* vLayout1 = new QVBoxLayout();
+    vLayout1->addWidget( m_intervalWheel );
+    vLayout1->addWidget( m_timerWheel );
+    vLayout1->addStretch( 10 );
+    vLayout1->addWidget( m_amplitudeKnob );
+    vLayout1->addWidget( m_frequencyKnob );
+
+    QHBoxLayout* layout = new QHBoxLayout( this );
+    layout->addWidget( m_plot, 10 );
+    layout->addLayout( vLayout1 );
+
+    connect( m_amplitudeKnob, SIGNAL(valueChanged(double)),
+        SIGNAL(amplitudeChanged(double)) );
+
+    connect( m_frequencyKnob, SIGNAL(valueChanged(double)),
+        SIGNAL(frequencyChanged(double)) );
+
+    connect( m_timerWheel, SIGNAL(valueChanged(double)),
+        SIGNAL(signalIntervalChanged(double)) );
+
+    connect( m_intervalWheel, SIGNAL(valueChanged(double)),
+        m_plot, SLOT(setIntervalLength(double)) );
+}
+
+void MainWindow::start()
+{
+    m_plot->start();
+}
+
+double MainWindow::frequency() const
+{
+    return m_frequencyKnob->value();
+}
+
+double MainWindow::amplitude() const
+{
+    return m_amplitudeKnob->value();
+}
+
+double MainWindow::signalInterval() const
+{
+    return m_timerWheel->value();
+}
+
+#include "moc_MainWindow.cpp"