QWebView opacity rendering trouble

Antoine

Hi eveybody,

I have a strange problem with opacity in a webview.

I am using a QWebView in front of a QGLWidget.

The background of the QWebView is set to transparent, like this :

this->setStyleSheet("background-color: transparent;");
this->setWindowFlags(Qt::FramelessWindowHint); //No windowing
this->setAttribute(Qt::WA_TranslucentBackground); // No background

And the background of the HTML page is also set to transparent in the CSS of the page, like this :

body{
	background-color: rgba(255,255,255, 0) !important;
	background:transparent !important;
}

I want to create a DIV on the left of the HTML page with a white background at 60% opacity, like this:
the CSS property in the HTML page :

background: rgba(255, 255, 255, 0.60);

Normaly the result should be like this :
Under Chrome
(a small white transparency)

But
When I am running the program, here the result I've got :
In the app
(an ugly gray transparency)

I have tried w/o any success, this :

QPalette palette = this->palette(); //Get webView palette
palette.setBrush(QPalette::Base, Qt::transparent);
this->page()->setPalette(palette); //Set transparent palette

this->setAutoFillBackground(false);
this->setAttribute(Qt::WA_OpaquePaintEvent, false);//Remove opaque

I really don't know how to handle this issue : (

Please Can anyone help me on this ?

Antoine

This post is deleted!

Antoine

Nobody ?? =\

B. Marley

try to set alpha value 0-255.

ex: rgba(255, 255, 255, 102) instead of rgba(255, 255, 255, 0.60);

Antoine

@B.-Marley No working cause it's not valid, css3 only accept alpha value between 0 and 1

I also tried hsla() property but same problem.

So I thought "ok whatever, I'll put a white background-image 1px repeating with a opacity of 0.6."

It's not working too. Same result.

So now I'm coming back to my first idea that this issue is from QWidget layering background.
The 3D widget is a QOpenGLWidget and I have my QWebview in front with the properties :

this->setStyleSheet("background-color: transparent;");
this->setAttribute(Qt::WA_TranslucentBackground); // No background

Maybe the idea of :

this->setAttribute(Qt::WA_OpaquePaintEvent, false);//Remove opaque

was a good way ?

There is anyway to repaint the background or something else ?

Please help

Antoine

Can it be a sort of filter on the QOpenGlWidget ?

Antoine

Somebody have a clue please ?