Loading svg from char buffer

[FroZtiZ]

Dear community,

Currently I have a soft that creates png image inside a char*.
It is quite easy to load it in a QPixmap using the QPixmap::loadFromData() function

QPixmap pic;
pic.loadFromData((const uchar*)buf, len, "png");

This image is then rendered inside a QScrollArea

ui->scrollArea->setWidget(pic);

I want to evolve my code and use svg instead of png to avoid losing quality when zooming in.
I have no idea where to start.
I looked at QGraphicsSvgItem, QSvgGenerator, QSvgWidget but there is no similar option to load from a char*...
Any idea by what I can replace QPixmap to take my svg instead of png and how to render it ?

[SGaist]

Hi,

Use QSvgRenderer to render it on your QPixmap.

[FroZtiZ]

Thanks SGaist.
So globally what you tell me is (where "buf" is a char* and contains the svg code):

QPixmap pic;
pic.loadFromData((const uchar*)buf, len, "svg");
QSvgRenderer(pic);

Is that your suggestion?

[mpergand]

@FroZtiZ
I think you have to convert your char buffer to QByteArray first, then use:
QSvgRenderer(const QByteArray &contents, QObject *parent = nullptr)

[FroZtiZ]

Oh ok I understand the strategy. Thanks a lot