Kwave::BitrateWidget Class Reference

#include <BitrateWidget.h>

Inheritance diagram for Kwave::BitrateWidget:

Collaboration diagram for Kwave::BitrateWidget:

Signals
void	valueChanged (int value)

Public Member Functions
	BitrateWidget (QWidget *parent)
virtual	~BitrateWidget ()
virtual void	setValue (int bitrate)
virtual int	value ()
virtual void	setSpecialValueText (const QString &text)
virtual void	allowRates (const QList< int > &list)

Protected Slots
void	sliderChanged (int value)
void	spinboxChanged (int value)
void	snapInSlider ()

Protected Member Functions
int	nearestIndex (int rate)

Private Attributes
QList< int >	m_rates

Detailed Description

Definition at line 31 of file BitrateWidget.h.

Constructor & Destructor Documentation

BitrateWidget()

Kwave::BitrateWidget::BitrateWidget ( QWidget *  parent )

explicit

Constructor

Definition at line 30 of file BitrateWidget.cpp.

References Kwave::connect(), m_rates, setValue(), sliderChanged(), snapInSlider(), spinboxChanged(), and valueChanged().

    :QWidget(parent),
     Ui::BitrateWidgetBase(), m_rates()
{
    setupUi(this);
    m_rates.append(0); // don't let it stay empty, that makes life easier

    connect(slider, SIGNAL(valueChanged(int)),
            this, SLOT(sliderChanged(int)));
    connect(spinbox, SIGNAL(valueChanged(int)),
            this, SLOT(spinboxChanged(int)));
    connect(slider, SIGNAL(sliderReleased()),
            this, SLOT(snapInSlider()));
    connect(spinbox, SIGNAL(snappedIn(int)),
            slider, SLOT(setValue(int)));
}

Here is the call graph for this function:

~BitrateWidget()

Kwave::BitrateWidget::~BitrateWidget ( )

virtual

Destructor

Definition at line 48 of file BitrateWidget.cpp.

{
}

Member Function Documentation

allowRates()

void Kwave::BitrateWidget::allowRates ( const QList< int > &  list )

virtual

sets a list of allowed bitrates

Definition at line 74 of file BitrateWidget.cpp.

References m_rates, setValue(), and value().

{
    int old_value = value();

    m_rates = list;
    if (m_rates.isEmpty()) m_rates.append(0);

    // set new ranges
    spinbox->allowRates(m_rates);
    slider->setMinimum(m_rates.first());
    slider->setMaximum(m_rates.last());

    setValue(old_value);
}

Here is the call graph for this function:

nearestIndex()

int Kwave::BitrateWidget::nearestIndex ( int  rate )

protected

find the nearest bitrate index of a current position

Definition at line 90 of file BitrateWidget.cpp.

References m_rates, and Kwave::toInt().

Referenced by sliderChanged(), snapInSlider(), and value().

{
    // find the nearest value
    int nearest = 0;
    foreach(int i, m_rates)
        if (qAbs(i - rate) < qAbs(nearest - rate)) nearest = i;

    // find the index
    int index = m_rates.contains(nearest) ? m_rates.indexOf(nearest) : 0;

    // limit the index into a reasonable range
    if (index < 0)
        index = 0;
    if (index >= Kwave::toInt(m_rates.size()))
        index = m_rates.size()-1;

    return index;
}

Here is the call graph for this function:

Here is the caller graph for this function:

setSpecialValueText()

void Kwave::BitrateWidget::setSpecialValueText ( const QString &  text )

virtual

set a new special value text

Definition at line 68 of file BitrateWidget.cpp.

{
    spinbox->setSpecialValueText(text);
}

setValue()

void Kwave::BitrateWidget::setValue ( int  bitrate )

virtual

sets a new current value

Definition at line 53 of file BitrateWidget.cpp.

Referenced by allowRates(), and BitrateWidget().

{
    slider->setValue(bitrate);
    spinbox->setValue(bitrate);
}

Here is the caller graph for this function:

sliderChanged

void Kwave::BitrateWidget::sliderChanged ( int  value )

protectedslot

slider of ABR bitrate changed

Definition at line 110 of file BitrateWidget.cpp.

References m_rates, nearestIndex(), and valueChanged().

Referenced by BitrateWidget().

{
    int index = nearestIndex(value);
    spinbox->setValue(m_rates[index]);

    emit valueChanged(value);
}

Here is the call graph for this function:

Here is the caller graph for this function:

snapInSlider

void Kwave::BitrateWidget::snapInSlider ( )

protectedslot

slider has been released -> snap to nearest available value

Definition at line 125 of file BitrateWidget.cpp.

References m_rates, nearestIndex(), and value().

Referenced by BitrateWidget().

{
    int value = slider->value();
    int index = nearestIndex(value);
    slider->setValue(m_rates[index]); // snap in
}

Here is the call graph for this function:

Here is the caller graph for this function:

spinboxChanged

void Kwave::BitrateWidget::spinboxChanged ( int  value )

protectedslot

spinbox of ABR bitrate changed

Definition at line 119 of file BitrateWidget.cpp.

References valueChanged().

Referenced by BitrateWidget().

{
    emit valueChanged(value);
}

Here is the caller graph for this function:

value()

int Kwave::BitrateWidget::value ( )

virtual

returns the currently selected value

Definition at line 60 of file BitrateWidget.cpp.

References m_rates, and nearestIndex().

Referenced by allowRates(), and snapInSlider().

{
    int value = slider->value();
    int index = nearestIndex(value);
    return m_rates[index];
}

Here is the call graph for this function:

Here is the caller graph for this function:

valueChanged

void Kwave::BitrateWidget::valueChanged ( int  value )

signal

emitted whenever the bitrate setting has been modified

Referenced by BitrateWidget(), sliderChanged(), and spinboxChanged().

Here is the caller graph for this function:

Member Data Documentation

m_rates

QList<int> Kwave::BitrateWidget::m_rates

private

list of allowed bitrates, sorted ascending

Definition at line 78 of file BitrateWidget.h.

Referenced by allowRates(), BitrateWidget(), nearestIndex(), sliderChanged(), snapInSlider(), and value().

---

The documentation for this class was generated from the following files:

• plugins/fileinfo/BitrateWidget.h
• plugins/fileinfo/BitrateWidget.cpp