HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Files · demos/audio/widget.cpp

Added a note in docs about not plotting series with log axis...

Added a note in docs about not plotting series with log axis If a series contains zero on negative values along an attached log dimension, the entire series will not be plotted. Documented this fact. Task-number: QTRD-1916

Michal Klocek - - Load All Authors

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             widget.cpp
        
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      #include "widget.h"

      #include <QAudioDeviceInfo>

      #include <QAudioInput>

      #include <QChartView>

      #include <QLineSeries>

      #include <QChart>

      #include <QVBoxLayout>

      #include <QValueAxis>

      #include "xyseriesiodevice.h"

      QTCOMMERCIALCHART_USE_NAMESPACE

      Widget::Widget(QWidget *parent)

          : QWidget(parent),

            m_device(0),

            m_chart(0),

            m_series(0),

            m_audioInput(0)

      {

          m_chart = new QChart;

          QChartView *chartView = new QChartView(m_chart);

          chartView->setMinimumSize(800, 600);

          m_series = new QLineSeries;

          m_chart->addSeries(m_series);

          QValueAxis *axisX = new QValueAxis;

          axisX->setRange(0, 2000);

          axisX->setLabelFormat("%g");

          axisX->setTitleText("Samples");

          QValueAxis *axisY = new QValueAxis;

          axisY->setRange(-1, 1);

          axisY->setTitleText("Audio level");

          m_chart->setAxisX(axisX, m_series);

          m_chart->setAxisY(axisY, m_series);

          m_chart->legend()->hide();

          m_chart->setTitle("Data from the microphone");

          QVBoxLayout *mainLayout = new QVBoxLayout;

          mainLayout->addWidget(chartView);

          setLayout(mainLayout);

          QAudioFormat formatAudio;

          formatAudio.setSampleRate(8000);

          formatAudio.setChannelCount(1);

          formatAudio.setSampleSize(8);

          formatAudio.setCodec("audio/pcm");

          formatAudio.setByteOrder(QAudioFormat::LittleEndian);

          formatAudio.setSampleType(QAudioFormat::UnSignedInt);

          QAudioDeviceInfo inputDevices = QAudioDeviceInfo::defaultInputDevice();

          m_audioInput = new QAudioInput(inputDevices,formatAudio, this);

          m_device = new XYSeriesIODevice(m_series, this);

          m_device->open(QIODevice::WriteOnly);

          m_audioInput->start(m_device);

      }

      Widget::~Widget()

      {

          m_audioInput->stop();

          m_device->close();

      }

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				#include "widget.h"
				#include <QAudioDeviceInfo>
				#include <QAudioInput>
				#include <QChartView>
				#include <QLineSeries>
				#include <QChart>
				#include <QVBoxLayout>
				#include <QValueAxis>
				#include "xyseriesiodevice.h"

				QTCOMMERCIALCHART_USE_NAMESPACE

				Widget::Widget(QWidget *parent)
				: QWidget(parent),
				m_device(0),
				m_chart(0),
				m_series(0),
				m_audioInput(0)
				{
				m_chart = new QChart;
				QChartView *chartView = new QChartView(m_chart);
				chartView->setMinimumSize(800, 600);
				m_series = new QLineSeries;
				m_chart->addSeries(m_series);
				QValueAxis *axisX = new QValueAxis;
				axisX->setRange(0, 2000);
				axisX->setLabelFormat("%g");
				axisX->setTitleText("Samples");
				QValueAxis *axisY = new QValueAxis;
				axisY->setRange(-1, 1);
				axisY->setTitleText("Audio level");
				m_chart->setAxisX(axisX, m_series);
				m_chart->setAxisY(axisY, m_series);
				m_chart->legend()->hide();
				m_chart->setTitle("Data from the microphone");

				QVBoxLayout *mainLayout = new QVBoxLayout;
				mainLayout->addWidget(chartView);
				setLayout(mainLayout);

				QAudioFormat formatAudio;
				formatAudio.setSampleRate(8000);
				formatAudio.setChannelCount(1);
				formatAudio.setSampleSize(8);
				formatAudio.setCodec("audio/pcm");
				formatAudio.setByteOrder(QAudioFormat::LittleEndian);
				formatAudio.setSampleType(QAudioFormat::UnSignedInt);

				QAudioDeviceInfo inputDevices = QAudioDeviceInfo::defaultInputDevice();
				m_audioInput = new QAudioInput(inputDevices,formatAudio, this);

				m_device = new XYSeriesIODevice(m_series, this);
				m_device->open(QIODevice::WriteOnly);

				m_audioInput->start(m_device);
				}

				Widget::~Widget()
				{
				m_audioInput->stop();
				m_device->close();
				}