I use the following code in a QWebEngineView object to capture a web page to an image:
image=new QImage(w,h, QImage::Format_ARGB32);
painter = new QPainter(image);
render(painter);
image->save(imagefilename);
Unfortunately, it only renders part of the web page that is shown on the widget to the image. How to render the whole page to the image?
It is possible to hide webview and resize it to show the whole web page. I'm using PyQt5 (version 5.12), but the idea should apply to C++ Qt as well:
# Create hidden QWebEngineView
view.setAttribute(Qt.WA_DontShowOnScreen)
view.show()
...
# Resize the view and then capture image
def take_screenshot():
view.grab().save(output_file, b'PNG')
size = view.page().contentsSize().toSize()
view.resize(size)
QTimer.singleShot(1000, take_screenshot)
