Saving QGraphicsScene (vector graphics PLUS IMAGE) to SVG

[bliako]

Hello,

I am creating a QGraphicsScene and adding several points (as tiny QGraphicsRectItem). I am also creating a path as QGraphicsPathItem. I am able to export this to SVG using the well documented method:

QSvgGenerator generator;
generator.setResolution((int )dpi);
generator.setFileName(afilename);

QPainter painter;
painter.begin(&generator);
painter.setRenderHint(QPainter::Antialiasing);
// myGraphicsScene is a subclass of QGraphicsScene
myGraphicsScene->render(&painter);
painter.end();

And that works fine. Output SVG is fine.

Then I am reading an image from file and convert it to a QBrush which I use to fillPath(), that is to flood-fill my path with this image/brush.

I can see the vector graphics and the filled-with-image path on my canvas just fine. I can also see same results when outputting as an image (PNG/JPG) using similar method as above.

BUT, I can not see the image in my SVG output file. Everything else is OK, path, rects. Just fine. But there is no image. And as far as I could understand by reading the output SVG text file, there is no mention of any image in that file.

Does anyone have any hints for solving this problem?

Thanks,
bliako

[SGaist]

Hi,

This might be outside of the static features of SVG tiny 1.2 specification implemented by the QtSvg module.

See here

[bliako]

Thanks for your reply. I found this link via the link you provided: [https://www.w3.org/Graphics/SVG/feature/1.2/#SVG-static](link url) Which lists all the static features of SVG 1.2 as:

Feature String:
    http://www.w3.org/Graphics/SVG/feature/1.2/#SVG-static
User Agent Supports:
    All of the following features (described below)
...
feature/1.2/#ConditionalProcessingAttribute"
        "http://www.w3.org/Graphics/SVG/feature/1.2/#Image"
... etc.

 For SVG viewers,
"http://www.w3.org/Graphics/SVG/feature/1.2/#SVG-static"
indicates that the viewer can process and render
successfully all of the language features in the
modules corresponding to the features
listed above. 

So, Image support is there as I understand it.

And I can confirm that if I do

QPixmap *myPixmap = new QPixmap();
myPixmap.load(imgfilename);
...
Qpainter painter;
painter->drawPixmap(0, 0, *myPixmap);
...

Then exported SVG file contains an <image element and I can view the image in gimp.

However, if I add:

...
QBrush *myBrush = new QBrush(*myPixmap);
...
painter->fillPath(myGIPath->path(), *myBrush);

I can see the pixmap on my application's QGraphicsScene fine, but when I export to SVG, image is now missing.

Am I doing this last bit right?

[SGaist]

Except that you don't need to allocate the brush on the heap. The line is fine.

Did you already check the bug report system ?