QQuickPaintedItem not update whole area.

Mintogo

Hi

I create class inherit form QQuickPaintedItem class.

and write void paint(QPainter painter);*

like below...

// set image data to display on QQuickItem
void QuickImageItem::setImage(const QImage &image)
{
    this->current_image = image.mirrored(this->_flipHorizontally, !this->_flipVertically);

    update();
}
...
// here is paint funciton
void QuickImageItem::paint(QPainter *painter)
{
    if (this->image().isNull() != true)
    {
        QRectF bounding_rect = boundingRect();

        // do something...

        if (this->_cropWidth != -1 && this->_cropHeight != -1)
        {
            int imageWidth = this->image().width();
            int imageHeight = this->image().height();

            pixmap = pixmap.copy((imageHeight - this->_cropHeight) / 2, (imageWidth - this->_cropWidth) / 2, this->_cropHeight, this->_cropWidth);
        }

        painter->setRenderHints(QPainter::HighQualityAntialiasing | QPainter::SmoothPixmapTransform, true);

       // draw image
        painter->drawPixmap(0, 0, drawWidth, drawHeight, pixmap);
    }
}

first set image was darwed very well.

but after change this->current_image it update partially.

alt text

Like above image.

The black area in red rectangle is I changed image and this size is same with person image.

I chnaged current_image variable and call update(). but not update whole image area.

Is there something I missing?

Mintogo

I resolved it.

It because of RenderTarget.

I rollback it to default value.