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#include "TitleBar.h"

#include <QtCore>
#include <QtWidgets>

TitleBar::TitleBar(QWidget *parent)
    : QWidget(parent)
    , m_progress(0)
{
    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
}

void TitleBar::setHost(const QString &host)
{
    m_host = host;
    update();
}

void TitleBar::setTitle(const QString &title)
{
    m_title = title;
    update();
}

void TitleBar::setProgress(int percent)
{
    m_progress = percent;
    update();
}

QSize TitleBar::sizeHint() const
{
    return minimumSizeHint();
}

QSize TitleBar::minimumSizeHint() const
{
    QFontMetrics fm = fontMetrics();
    return QSize(100, fm.height());
}

void TitleBar::paintEvent(QPaintEvent *event)
{
    QString title = m_host;
    if (!m_title.isEmpty())
        title.append(": ").append(m_title);

    QPalette pal = palette();
    QPainter p(this);
    p.fillRect(event->rect(), pal.color(QPalette::Highlight));

    if (m_progress > 0) {

        QRect box = rect();
        box.setLeft(16);
        box.setWidth(width() - box.left() - 110);

        p.setPen(pal.color(QPalette::HighlightedText));
        p.setOpacity(0.8);
        p.drawText(box, Qt::AlignLeft + Qt::AlignVCenter, title);

        int x = width() - 100 - 5;
        int y = 1;
        int h = height() - 4;

        p.setOpacity(1.0);
        p.setBrush(Qt::NoBrush);
        p.setPen(pal.color(QPalette::HighlightedText));
        p.drawRect(x, y, 100, h);
        p.setPen(Qt::NoPen);
        p.setBrush(pal.color(QPalette::HighlightedText));
        p.drawRect(x, y, m_progress, h);
    } else {

        QRect box = rect();
        box.setLeft(16);
        box.setWidth(width() - box.left() - 5);
        p.setPen(pal.color(QPalette::HighlightedText));
        p.drawText(box, Qt::AlignLeft + Qt::AlignVCenter, title);
    }

    p.end();
}