How to get the contentSize of a web page in Qt5.4-QtWebEngine

问题

I'm using the new Qt5.4 with the module QtWebEngine and from what I see mainFrame() doesn't exists anymore. How to get the contentSize/size of the page and how to render it now? I tried with the setView and view but doesn't work.

回答1:

Check if the QWebEnginePage::geometryChangeRequested signal does what you want.

Also you display a QWebEnginePage by creating a QWebEngineView (it's a QWidget) and calling QWebEngineView::setPage(yourPage).

回答2:

I couldn't find any native Qt method for that, but I came up with a workaround: once the page is loaded, I do the following to resize my widget to the web content:

webView->page()->runJavaScript("document.documentElement.scrollWidth;",[=](QVariant result){
int newWidth=result.toInt()+10;
webView->resize(newWidth,webView->height());
});

webView->page()->runJavaScript("document.documentElement.scrollHeight;",[=](QVariant result){
int newHeight=result.toInt();
webView->resize(webView->width(),newHeight);
});

NB: I added a 10px width margin

来源：https://stackoverflow.com/questions/26278858/how-to-get-the-contentsize-of-a-web-page-in-qt5-4-qtwebengine