qui/ThresholdWidget.cpp

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