#include "CardsStatusBar.h"

const QStringList CardsStatusBar::Colors = {"green", "#fffd7c", "white", "#bd8d71"};

CardsStatusBar::CardsStatusBar(QWidget* aParent) :
    QWidget(aParent)
{
    setMinimumHeight(10);
    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
}

CardsStatusBar::~CardsStatusBar()
{
    delete painter;
}

void CardsStatusBar::paintEvent(QPaintEvent* aEvent)
{
    QWidget::paintEvent( aEvent );
    if(values.isEmpty())
        return;
    max = getMax();

    painter = new QPainter(this);
    painter->setRenderHint(QPainter::Antialiasing);
    painter->save();
        
    QPainterPath path;
    path.addRoundedRect( rect(), Radius, Radius);
    painter->setClipPath( path );

    barRect = rect().adjusted(0, 0, 1, 0);

    sectionLeft = rect().left();
    for(int i = 0; i < values.size(); i++)
        drawSection(i);

    painter->restore();

    painter->setPen(QPen("#7c7c7c"));
    painter->drawRoundedRect(rect(), Radius, Radius);
}

int CardsStatusBar::getMax() const
{
    int max = 0;
    foreach(int v, values)
        max += v;
    if(max == 0)
        max = 1;
    return max;
}

void CardsStatusBar::drawSection(int index)
{
    QRectF sectionRect = getSectionRect(index);
    painter->setPen( Qt::NoPen );
    painter->setBrush(getSectionGradient(index));
    painter->drawRect(sectionRect);

    painter->setPen(QPen(QBrush("#a7a7a7"), 0.5));
    painter->drawLine(sectionRect.topRight(), sectionRect.bottomRight());

    sectionLeft += sectionRect.width();
}

QLinearGradient CardsStatusBar::getSectionGradient(int index)
{
    QLinearGradient grad(barRect.topLeft(), barRect.bottomLeft());
    grad.setColorAt( 0, Qt::white);
    grad.setColorAt( 0.9, QColor(Colors[index]) );
    return grad;
}

QRectF CardsStatusBar::getSectionRect(int index)
{
    QRectF sectionRect = barRect;
    sectionRect.moveLeft(sectionLeft);
    qreal sectionWidth = barRect.width() * values[index] / max;
    sectionRect.setWidth(sectionWidth);
    return sectionRect;
}