QTabWidget customization

[Lykurg]

You only have to change a row and add one:

#include <QtGui>
 
class CustomTabStyle : public QProxyStyle
{
public:
    QSize sizeFromContents(ContentsType type, const QStyleOption *option,
                           const QSize &size, const QWidget *widget) const
    {
        QSize s = QProxyStyle::sizeFromContents(type, option, size, widget);
        if (type == QStyle::CT_TabBarTab)
            s.transpose();
        return s;
    }
 
    void drawControl(ControlElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget) const
    {
        if (element == CE_TabBarTabLabel)
        {
            if (const QStyleOptionTab *tab = qstyleoption_cast<const QStyleOptionTab *>(option))
            {
                QStyleOptionTab opt(*tab);
                opt.shape = QTabBar::RoundedNorth;
                QProxyStyle::drawControl(element, &opt, painter, widget);
                return;
            }
        }
        QProxyStyle::drawControl(element, option, painter, widget);
    }
};
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
 
    QTabBar tb;
    tb.setStyle(new CustomTabStyle);
    tb.setShape(QTabBar::RoundedWest);
    tb.addTab("Tab 1");
    tb.addTab("Tab 2");
    tb.show();
 
    return a.exec();
}

#include <QtGui>

class CustomTabStyle : public QProxyStyle
{
public:
    QSize sizeFromContents(ContentsType type, const QStyleOption *option,
                           const QSize &size, const QWidget *widget) const
    {
        QSize s = QProxyStyle::sizeFromContents(type, option, size, widget);
        if (type == QStyle::CT_TabBarTab)
            s.transpose();
        return s;
    }

    void drawControl(ControlElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget) const
    {
        if (element == CE_TabBarTabLabel)
        {
            if (const QStyleOptionTab *tab = qstyleoption_cast<const QStyleOptionTab *>(option))
            {
                QStyleOptionTab opt(*tab);
                opt.shape = QTabBar::RoundedNorth;
                QProxyStyle::drawControl(element, &opt, painter, widget);
                return;
            }
        }
        QProxyStyle::drawControl(element, option, painter, widget);
    }
};

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QTabBar tb;
    tb.setStyle(new CustomTabStyle);
    tb.setShape(QTabBar::RoundedWest);
    tb.addTab("Tab 1");
    tb.addTab("Tab 2");
    tb.show();
    
    return a.exec();
}

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