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qtqtreeviewqheaderview

Qt: QHeaderView place sort-indicator on the right of the header text

If I set: QHeaderView::down-arrow { subcontrol-position: center left}, the down-arrow is on the left of the column, and if I set center right, it is placed on the right of the column, but I want to place the arrow next to the title (on the right side).

enter image description here

Solution

  • The way I sorted was by creating a QProxyStyle for the header, and override drawControl. I also assigned an empty icon to hide the default one.

    treeviewwidget.cpp at initialize():

    treeviewHeaderProxy* m_oHeaderStyle = new treeviewHeaderProxy();
treeview->header()->setStyle(m_oHeaderStyle);
treeview->header()->setDefaultAlignment(Qt::AlignCenter);
treeview->header()->setStyleSheet("QHeaderView::down-arrow { image: url(:/shared/empty); }"
                                "QHeaderView::up-arrow { image: url(:/shared/empty); } ");

    treeviewHeaderProxy.h:

    class treeviewHeaderProxy : public QProxyStyle
{
public:
    explicit treeviewHeaderProxy();
    void drawControl(ControlElement oCtrElement, const QStyleOption * poStylrOptionption, QPainter * poPainter, const QWidget * poWidget = 0) const;

};

    treeviewHeaderProxy.cpp:

    void treeviewHeaderProxy::drawControl(ControlElement oCtrElement, const QStyleOption *poStyleOptionption, QPainter *poPainter, const QWidget *poWidget) const
{
    // Header label?
    if (oCtrElement == CE_HeaderLabel) {
        QStyleOptionHeader *poStyleOptionHeader = (QStyleOptionHeader *) poStyleOptionption;
        QStyleOptionHeader::SortIndicator sortOption = poStyleOptionHeader->sortIndicator;
        QRect oRect = poStyleOptionHeader->rect;

        // Text
        int iTextWidth = poStyleOptionHeader->fontMetrics.width(poStyleOptionHeader->text);
        int iTextHeight = poStyleOptionHeader->fontMetrics.height();
        QRect oTextRect = QRect(oRect.left() + oRect.width(), catRect.top() + (oRect.height() - iTextHeight)/2,
                                iTextWidth*1.2, iTextHeight);
        poPainter->setPen(SUPER_DARK_GREY);
        poPainter->drawText(oTextRect, poStyleOptionHeader->text); // Draw text

        // Sort Indicator
        QPixmap oSortPixmap;
        switch(sortOption){
        case QStyleOptionHeader::SortDown:
            oSortPixmap = QIcon(":/shared/drop_up_grey").pixmap(10,10);
            break;
        case QStyleOptionHeader::SortUp:
            oSortPixmap = QIcon(":/shared/drop_down_grey").pixmap(10,10);
            break;
        }

        if(!oSortPixmap.isNull()){
            QRect oSortRect = QRect(oTextRect.left() + oTextRect.width(), oRect.top() + (oRect.height() - oSortPixmap.height())/2,
                                    oSortPixmap.width(), oSortPixmap.height());
            poPainter->drawPixmap(oSortRect, oSortPixmap); // Draw sortIcon
        }
        return;
    }
    QProxyStyle::drawControl(oCtrElement, poStyleOptionption, poPainter, poWidget);
}