Is it possible to display SVG in Qt(5.3) TextEdit without loosing quality?

Question

I have svg image with this attributes: viewBox="0 0 100 100"

This is basic code which I use for displaying svg:

Image{
  width: 50
  height: 50
  source: "test.svg"
}

and it's not ok because image is rasterized before resizing to width and height values(50,50).

This code works perfect on all resolution:

Image{
  width: 50
  height: 50
  sourceSize.width: width
  sourceSize.height: height
  source: "test.svg"
}

because image is drawn in exact dimensions which is needed!

Is it possible to get same functionality in a TextEdit where <img> tag is used?

<img src="test.svg" width="50" height="50">

This code doesn't work because sourceSize can't be set... and image is rasterized before resizing and displaying...

Maybe there is some other way to accomplish this?

Answer 1

The only solution is to provide the image size as part of the image url, and reimplement QTextDocument::loadResource or QTextEdit::loadResource in a derived class. Your image element would then look like:

<img src="test.svg?50x50" width="50" height="50" />

You can parse the url in your implementation of loadResource.