On Fri, 10 Sep 2021 18:15:21 GMT, Jose Pereda <jper...@openjdk.org> wrote:
>> Currently, `WebPage` has already a public `setBackgroundColor()` method, but
>> the class is not public. Therefore, public API is needed in `WebView` to
>> allow developers access to it.
>>
>> In line with the `fontSmoothingType` property, this PR provides public
>> support for setting the background color of a WebPage, by adding a
>> `pageFill` property, and a CSR is required.
>>
>> The color for the background, that can be opaque, transparent or with any
>> level of opacity, can be set via code or via CSS using `-fx-page-fill`.
>>
>> Unit tests and a system test are provided.
>
> Jose Pereda has updated the pull request incrementally with one additional
> commit since the last revision:
>
> Fix test to pass all 3 platforms
Thanks for testing it, I can reproduce the issue indeed.
I had my interactive test too which doesn't fail with alpha = 0, and comparing
both tests I realise now that in my case I was using a transparent VBox instead
of a Group as a container for the WebView, and later on when I created the
system test, I removed such container.
If you try:
webView.setPageFill(Color.TRANSPARENT);
var root = new VBox();
root.setStyle("-fx-background-color: transparent");
root.getChildren().add(webView);
that should work for you as well...
Obviously there is an issue with alpha = 0 in case we use Group or not
container at all, vs when we use a Region.
The comment at
[Region::doComputeGeomBounds](https://github.com/openjdk/jfx/blob/master/modules/javafx.graphics/src/main/java/javafx/scene/layout/Region.java#L3310)
my be relevant though?
> the geom bounds forms the basis of the dirty regions
-------------
PR: https://git.openjdk.java.net/jfx/pull/563
