I have a custom QStyledItemDelegate that paints a QPixmap in a particular column. When that cell is hovered over with the mouse, I would like to paint it differently.
Below is my paint event, which does paint the cell correctly when not State_MouseOver. However, it changes the color when I hover anywhere on the row. How can I make it change only when the mouse is hovering over the cell with the pixmap in it?
void myDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
Q_ASSERT(index.isValid());
switch(index.column()) {
case DAY_COLUMN:
{
QSize btnSize = QSize(option.rect.height() * .9, option.rect.height() * .9);
QRect r = option.rect;
int x = r.right() - btnSize.width() - 10;
int y = r.top();
QRect btnRect = QRect(x, y, btnSize.width(), btnSize.height());
QPixmap pixmap(":/icons/edit.png");
// If hovered over, change color.
if(option.state & QStyle::State_MouseOver) {
auto mask = pixmap.createMaskFromColor(QColor("Black"), Qt::MaskOutColor);
pixmap.fill(QColor("Red"));
pixmap.setMask(mask);
}
painter->drawPixmap(btnRect, pixmap, pixmap.rect());
return;
}
/*.... draw other column(s) as appropriate ...*/
}
}
I'm using this delegate on all rows withing a QTreeView.
Qt 5.12