tools/qvfb/qvfbratedlg.cpp

   1 /****************************************************************************
   2 **
   3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
   4 ** All rights reserved.
   5 ** Contact: Nokia Corporation (qt-info@nokia.com)
   6 **
   7 ** This file is part of the tools applications of the Qt Toolkit.
   8 **
   9 ** $QT_BEGIN_LICENSE:LGPL$
  10 ** No Commercial Usage
  11 ** This file contains pre-release code and may not be distributed.
  12 ** You may use this file in accordance with the terms and conditions
  13 ** contained in the Technology Preview License Agreement accompanying
  14 ** this package.
  15 **
  16 ** GNU Lesser General Public License Usage
  17 ** Alternatively, this file may be used under the terms of the GNU Lesser
  18 ** General Public License version 2.1 as published by the Free Software
  19 ** Foundation and appearing in the file LICENSE.LGPL included in the
  20 ** packaging of this file.  Please review the following information to
  21 ** ensure the GNU Lesser General Public License version 2.1 requirements
  22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
  23 **
  24 ** In addition, as a special exception, Nokia gives you certain additional
  25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
  26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
  27 **
  28 ** If you have questions regarding the use of this file, please contact
  29 ** Nokia at qt-info@nokia.com.
  30 **
  31 **
  32 **
  33 **
  34 **
  35 **
  36 **
  37 **
  38 ** $QT_END_LICENSE$
  39 **
  40 ****************************************************************************/
  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