libeap/wpa_supplicant/wpa_gui-qt4/signalbar.cpp

   1 /*
   2  * wpa_gui - SignalBar class
   3  * Copyright (c) 2011, Kel Modderman <kel@otaku42.de>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include <cstdio>
  10 #include <qapplication.h>
  11
  12 #include "signalbar.h"
  13
  14
  15 SignalBar::SignalBar(QObject *parent)
  16         : QStyledItemDelegate(parent)
  17 {
  18 }
  19
  20
  21 SignalBar::~SignalBar()
  22 {
  23 }
  24
  25
  26 void SignalBar::paint(QPainter *painter,
  27                       const QStyleOptionViewItem &option,
  28                       const QModelIndex &index) const
  29 {
  30         QStyleOptionProgressBar opts;
  31         int signal;
  32
  33         if (index.column() != 3) {
  34                 QStyledItemDelegate::paint(painter, option, index);
  35                 return;
  36         }
  37
  38         if (index.data().toInt() > 0)
  39                 signal = 0 - (256 - index.data().toInt());
  40         else
  41                 signal = index.data().toInt();
  42
  43         opts.minimum = -95;
  44         opts.maximum = -35;
  45         if (signal < opts.minimum)
  46                 opts.progress = opts.minimum;
  47         else if (signal > opts.maximum)
  48                 opts.progress = opts.maximum;
  49         else
  50                 opts.progress = signal;
  51
  52         opts.text = QString::number(signal) + " dBm";
  53         opts.textVisible = true;
  54         opts.rect = option.rect;
  55
  56         QApplication::style()->drawControl(QStyle::CE_ProgressBar,
  57                                            &opts, painter);
  58 }