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    41 

    42 #include "qvfbratedlg.h"

    43 #include <QLayout>

    44 #include <QLabel>

    45 #include <qslider.h>

    46 #include <QPushButton>

    47 

    48 QT_BEGIN_NAMESPACE

    49 

    50 QVFbRateDialog::QVFbRateDialog(int rate, QWidget *parent)

    51     : QDialog(parent)

    52 {

    53     oldRate = rate;

    54 

    55     QVBoxLayout *tl = new QVBoxLayout(this);

    56     tl->setMargin(5);

    57 

    58     QLabel *label = new QLabel("Target frame rate:", this);

    59     tl->addWidget(label);

    60 

    61     QHBoxLayout *hl = new QHBoxLayout();

    62     tl->addItem(hl);

    63     rateSlider = new QSlider(Qt::Horizontal);

    64     rateSlider->setMinimum(1);

    65     rateSlider->setMaximum(100);

    66     rateSlider->setPageStep(10);

    67     rateSlider->setValue(rate);

    68     hl->addWidget(rateSlider);

    69     connect(rateSlider, SIGNAL(valueChanged(int)), this, SLOT(rateChanged(int)));

    70     rateLabel = new QLabel(QString("%1fps").arg(rate), this);

    71     hl->addWidget(rateLabel);

    72 

    73     hl = new QHBoxLayout();

    74     tl->addItem(hl);

    75     QPushButton *pb = new QPushButton("OK", this);

    76     connect(pb, SIGNAL(clicked()), this, SLOT(ok()));

    77     hl->addWidget(pb);

    78     pb = new QPushButton("Cancel", this);

    79     connect(pb, SIGNAL(clicked()), this, SLOT(cancel()));

    80     hl->addWidget(pb);

    81 }

    82 

    83 void QVFbRateDialog::rateChanged(int r)

    84 {

    85     if (rateSlider->value() != r)

    86 	rateSlider->setValue(r);

    87     rateLabel->setText(QString("%1fps").arg(r));

    88     emit updateRate(r);

    89 }

    90 

    91 void QVFbRateDialog::cancel()

    92 {

    93     rateChanged(oldRate);

    94     reject();

    95 }

    96 

    97 void QVFbRateDialog::ok()

    98 {

    99     oldRate = rateSlider->value();

   100     accept();

   101 }

   102 

   103 QT_END_NAMESPACE