QSvgRenderer - correct rendering of svg-items despite of defaultSize()?

[Songg]

This is how i try to render SVG:

void DialogImageProperies::showSVG(QString sFile){
    this->adjustSize();
 
    QSvgRenderer rndr(sFile);   
    QPixmap px;
    QSizeF szSvgF = rndr.defaultSize();
 
    if (szSvgF.width() > szSvgF.height())
    {
        px = QPixmap(1000, int(qreal(1000 )* szSvgF.height()/szSvgF.width()));
    }
    else
    {
        px = QPixmap(int(qreal(1000 )* szSvgF.width()/szSvgF.height()), 1000 );
    }
 
 
    QPainter p(&px);
    rndr.render(&p);
 
    ui->wdgBck->setPixmap(px);
    this->exec();
}

void DialogImageProperies::showSVG(QString sFile){
    this->adjustSize();

    QSvgRenderer rndr(sFile);   
    QPixmap px;
    QSizeF szSvgF = rndr.defaultSize();

    if (szSvgF.width() > szSvgF.height())
    {
        px = QPixmap(1000, int(qreal(1000 )* szSvgF.height()/szSvgF.width()));
    }
    else
    {
        px = QPixmap(int(qreal(1000 )* szSvgF.width()/szSvgF.height()), 1000 );
    }


    QPainter p(&px);
    rndr.render(&p);

    ui->wdgBck->setPixmap(px);
    this->exec();
}

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But as for me, i never notice what is a size of canvas in any created by myself vector-image. So, i think that users also will not predefine correct boundaries.

That is how SVG looks in Inkscape:
svg_orig.jpg

That is what i get:
30xF1.jpg

For now i see no way to deal with all it...

[ChrisW67]

Have you investigated the viewBoxF() of the loaded SVG?

[Songg]

Have you investigated the viewBoxF() of the loaded SVG?

No. ViewBox is not what i looking for. For my case they are the same:

void DialogImageProperies::showSVG(QSvgRenderer &rndr,QString sFile){
 
	qd << "defaultSize  - " << rndr.defaultSize();
	qd << "viewBoxF  - " << rndr.viewBoxF();

void DialogImageProperies::showSVG(QSvgRenderer &rndr,QString sFile){
	
	qd << "defaultSize  - " << rndr.defaultSize();
	qd << "viewBoxF  - " << rndr.viewBoxF();

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And console output :

src\dlgImgProp.cpp   52 defaultSize  -  QSize(1250, 961)
src\dlgImgProp.cpp   53 viewBoxF  -  QRectF(0,0 1250x961.25)

src\dlgImgProp.cpp   52 defaultSize  -  QSize(1250, 961)
src\dlgImgProp.cpp   53 viewBoxF  -  QRectF(0,0 1250x961.25)

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[Songg]

Solution (or workaround? doesn't matter)

This is svg begin:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->

<svg
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:cc="http://creativecommons.org/ns#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns="http://www.w3.org/2000/svg"
xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
id="svg2"
version="1.1"
inkscape:version="0.91 r13725"
sodipodi:docname="hhhhhhhhhhh_slide2.svg"
width="1250"
height="961.25">
<defs
id="defs4" />
<sodipodi:namedview

If manually delete width="1250" and height="961.25" then Qt recalculate real itemsBoundingRect of svg)))

[Songg]

Solution:
Need to manually delete "width", "height", "viewBox" attributes from <svg> element. Then Qt not found predefined boundaries and calculate them by itself.