#include "slidergroup.h"
#include <cmath>
#include <QWidget>
#include <QVBoxLayout>

SliderGroup::SliderGroup(QString name,
                         int min,
                         int max,
                         int decimals,
                         QWidget *parent)
    : QWidget(parent)
{
    QBoxLayout *layout;
    if (decimals) {
        layout = new QVBoxLayout;
        slider.setOrientation(Qt::Vertical);
    }
    else {
         layout = new QHBoxLayout;
         slider.setOrientation(Qt::Horizontal);
         slider.setMaximumHeight(15);
         valueBox.setMaximumHeight(15);
    }
    layout->setAlignment(Qt::AlignHCenter);
    layout->setContentsMargins(0, 0, 0, 0);
    slider.setFocusPolicy(Qt::StrongFocus);
    slider.setTickPosition(QSlider::TicksBothSides);
    slider.setTickInterval((max - min) / 11);
    slider.setMinimumHeight(0);
    slider.setSingleStep(1);
    slider.setRange(min, max);
    slider.setValue(0);
    slider.setMinimumWidth(50);
    slider.setToolTip(name);
    slider.setStyleSheet("QSlider {"
                "border: 1px solid #aa8895;"
                "background: #20182d;"
                "margin: 0px;}"
                "QSlider::groove:vertical {"
                "border: 1px solid #999999;"
                "width: 25px;"
                "margin: -4px;}"
                "QSlider::handle:vertical {"
                "background: white;"
                "border: 1px solid #5c5c5c;"
                "width: 29px;"
                "height: 7px;"
                "margin: -2px;"
                "border-radius: 2px;}"
                "Qslider::tickmarks:vertical {background: white;"
                         "color: white;}"
                "QSlider::add-page:vertical {background: blue;}"
                "QSlider::sub-page:vertical {background: #20182d;}");
    slider.setContentsMargins(0, 0, 0, 0);
    valueBox.setFocusPolicy(Qt::NoFocus);
    valueBox.setButtonSymbols(QAbstractSpinBox::NoButtons);
    valueBox.setMinimumWidth(50);
    if (decimals) {
        valueBox.setRange(-84.0f, 0.0f);
        valueBox.setSpecialValueText("-inf");
    } else
        valueBox.setRange(min, max);
    valueBox.setValue(0);
    valueBox.setDecimals(decimals);
    valueBox.setObjectName(name);
    valueBox.setToolTip(name);
    valueBox.setAlignment(Qt::AlignHCenter);
    valueBox.setContentsMargins(0, 0, 0, 0);
    connect(&slider, SIGNAL(valueChanged(int)), this, SLOT(sliderValueChanged(int)));
    connect(&valueBox, SIGNAL(click()), this, SLOT(enableSlider()));
    layout->addWidget(&slider);
    layout->addWidget(&valueBox);
    this->setStyleSheet("border: 1px solid #aa8895;"
                "background-color: black;"
                "margin: 1px;"
                );
    layout->setSpacing(0);
    layout->setContentsMargins(0, 0, 0, 0);
    this->setLayout(layout);
}

void SliderGroup::sliderValueChanged(int value)
{
    valueBox.blockSignals(true);
    if (valueBox.decimals()) {
        float db = ((float)value / 771.0f) - 85.0f;
        if (db <= -84.5f) {
            valueBox.setSpecialValueText("-inf");
        } else
            valueBox.setValue(db);
    } else {
        valueBox.setValue(value);
    }
    valueBox.blockSignals(false);
    emit valueChanged(value);
};

void SliderGroup::setValue(float value)
{
    float db;

    slider.blockSignals(true);
    valueBox.blockSignals(true);
    if (int(value) != slider.value())
        slider.setValue(value);
    if (valueBox.decimals()) {
        db = (float)(value / 771.0f) - 85.0f;
        valueBox.setValue(db);
    } else
        valueBox.setValue(value);
    slider.blockSignals(false);
    valueBox.blockSignals(false);
}