qui/ThresholdWidget.cpp

   1 #include <QSlider>
   2 #include <QString>
   3
   4 #include "qui/ThresholdWidget.hpp"
   5 #include <iostream>
   6 #include <math.h>
   7
   8 // This is completely and totally derived from the Qt example
   9 // LCDRange.cpp
  10 ThresholdWidget::ThresholdWidget(QWidget *parent, int min, int max)
  11   : QWidget(parent),
  12     layout(new QHBoxLayout(this)),
  13     basepair_spinner(new QSpinBox(this)),
  14     window_size_label(new QLabel(this)),
  15     percent_label(new QLabel(this))
  16 {
  17   basepair_spinner->setWhatsThis("How many base pairs need to be conserved in the window size");
  18
  19   setRange(min, max);
  20
  21   connect(basepair_spinner, SIGNAL(valueChanged(int)),
  22           this, SLOT(setBasepairThreshold(int)));
  23
  24   basepair_spinner->setValue(min);
  25   updatePercentThreshold();
  26
  27   layout->addWidget(new QLabel("Threshold"));
  28   layout->addWidget(basepair_spinner);
  29   layout->addWidget(window_size_label);
  30   layout->addWidget(percent_label);
  31   setLayout(layout);
  32 }
  33
  34 void ThresholdWidget::setRange(int min, int max)
  35 {
  36   basepair_spinner->setRange(min, max);
  37   cur_bp_threshold = min;
  38   basepair_spinner->setValue(min);
  39
  40   QString num;
  41   num.setNum(max);
  42   window_size_label->setText("/"+num);
  43   updatePercentThreshold();
  44 }
  45
  46 double ThresholdWidget::min_ratio() const
  47 {
  48   double ratio=((double)basepair_spinner->minimum()/
  49                 (double)basepair_spinner->maximum());
  50
  51   return ratio;
  52 }
  53
  54 double ThresholdWidget::ratio() const
  55 {
  56   return ((float)threshold())/((float)basepair_spinner->maximum());
  57 }
  58
  59 void ThresholdWidget::setBasepairThreshold(int threshold)
  60 {
  61  if (cur_bp_threshold!= threshold)
  62   {
  63     cur_bp_threshold = threshold;
  64     cur_percent_threshold = (int)(roundl(ratio() * 100));
  65     basepair_spinner->setValue(threshold);
  66     updatePercentThreshold();
  67     emit thresholdChanged(threshold);
  68   }
  69 }
  70
  71 void ThresholdWidget::updatePercentThreshold()
  72 {
  73   int min_percent = (int)fmaxl(0.0, roundl(ratio()*100));
  74   QString label;
  75   label.setNum(min_percent);
  76   label += "%";
  77   percent_label->setText(label);
  78 }
  79
  80 int ThresholdWidget::threshold() const
  81 {
  82   return cur_bp_threshold;
  83 }