src/GUI/percentslider.cpp

   1 #include <QSlider>
   2 #include <QLabel>
   3 #include <QHBoxLayout>
   4 #include <QLocale>
   5 #include "units.h"
   6 #include "percentslider.h"
   7
   8
   9 static QString format(int value)
  10 {
  11         return QLocale::system().toString(value) + UNIT_SPACE + QString("%");
  12 }
  13
  14 PercentSlider::PercentSlider(QWidget *parent) : QWidget(parent)
  15 {
  16         _slider = new QSlider(Qt::Horizontal);
  17         _label = new QLabel();
  18
  19         _slider->setMinimum(0);
  20         _slider->setMaximum(100);
  21
  22         QFontMetrics fm(_label->font());
  23         _label->setFixedWidth(fm.boundingRect(format(_slider->maximum())).width());
  24         _label->setAlignment(Qt::AlignRight);
  25         _label->setText(format(_slider->value()));
  26
  27         connect(_slider, &QSlider::valueChanged, this, &PercentSlider::updateLabel);
  28
  29         QHBoxLayout *layout = new QHBoxLayout();
  30         layout->addWidget(_slider);
  31         layout->addWidget(_label);
  32
  33         setLayout(layout);
  34 }
  35
  36 void PercentSlider::updateLabel(int value)
  37 {
  38         _label->setText(format(value));
  39 }
  40
  41 int PercentSlider::value() const
  42 {
  43         return _slider->value();
  44 }
  45
  46 void PercentSlider::setValue(int value)
  47 {
  48         _slider->setValue(value);
  49         _label->setText(format(value));
  50 }