TitleBar.cpp Example File

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 #include "TitleBar.h"

 #include <QtCore>
 #include <QtGui>

 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();
 }