Bug 143678 – javascript window.open window size

• Status: NEW
• Component: Layout and Rendering

[Josef]

Environment: on MacBook with Retina display with and without external monitor.
If I am open with Javascript a new window with e.g.
window.open("","queryLogFrame","height=700,width=1000,scrollbars=no,resizable,status");
The window height is about 30-50 pixel smaller than with Firefox or Chrome.
This problem I notice the first time with 10.10 in conjunction with the Retina display.
--
Josef

[Simon Pieters (:zcorpan)]

This causes failures in these tests:

https://github.com/w3c/web-platform-tests/pull/5390

I think it would be good to have predictable behavior here, that "height" feature sets the viewport height like in other browsers.

[Chris Dumez]

Hmm, we do:
FloatSize viewportSize = page->chrome().pageRect().size();
FloatRect windowRect = page->chrome().windowRect();
windowRect.setHeight(*features.height + (windowRect.height() - viewportSize.height()));

So we *seem* to be doing the right thing. However, viewportSize and windowRect are identical :/

[Chris Dumez]

(In reply to Chris Dumez from comment #2)
> Hmm, we do:
> FloatSize viewportSize = page->chrome().pageRect().size();
> FloatRect windowRect = page->chrome().windowRect();
> windowRect.setHeight(*features.height + (windowRect.height() -
> viewportSize.height()));
> 
> So we *seem* to be doing the right thing. However, viewportSize and
> windowRect are identical :/

From what I can see viewportSize is wrong and windowRect is right.

[Chris Dumez]

Tim says we should subtract the topContentInset because the view is the same height as the window since Yosemite.

[Tim Horton]

Really I said "probably we should leave it up to the WebKits and ask them for window-size-for-given-view-size or something, instead of hoping that subtracting will give you what you want, but if you want to quickly work around the problem you could subtract topContentInset" :)

[Chris Dumez]

Test:
http://w3c-test.org/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-tokenization-width-height.html

[Chris Dumez]

Page::setTopContentInset() gets called *after* we set the new Window size unfortunately.

[Tim Horton]

(In reply to Chris Dumez from comment #7)
> Page::setTopContentInset() gets called *after* we set the new Window size
> unfortunately.

Where is the size set? You might be able to reorder it, because TCI is sent in WebProcessCreationParameters, so it's not like we don't have it.

[Tim Horton]

(In reply to Tim Horton from comment #8)
> (In reply to Chris Dumez from comment #7)
> > Page::setTopContentInset() gets called *after* we set the new Window size
> > unfortunately.
> 
> Where is the size set? You might be able to reorder it, because TCI is sent
> in WebProcessCreationParameters, so it's not like we don't have it.

WebPageCreationParameters, whatever.

[Chris Dumez]

(In reply to Tim Horton from comment #9)
> (In reply to Tim Horton from comment #8)
> > (In reply to Chris Dumez from comment #7)
> > > Page::setTopContentInset() gets called *after* we set the new Window size
> > > unfortunately.
> > 
> > Where is the size set? You might be able to reorder it, because TCI is sent
> > in WebProcessCreationParameters, so it's not like we don't have it.
> 
> WebPageCreationParameters, whatever.

The logic for setting the new window size is in:
RefPtr<Frame> createWindow(Frame& openerFrame, Frame& lookupFrame, const FrameLoadRequest& request, const WindowFeatures& features, bool& created) inside FrameLoader.cpp.

We first call chrome().createWindow() to create the Window.
Then we compute the height we want.
Finally we call chrome().setWindowRect().

[Chris Dumez]

(In reply to Chris Dumez from comment #10)
> (In reply to Tim Horton from comment #9)
> > (In reply to Tim Horton from comment #8)
> > > (In reply to Chris Dumez from comment #7)
> > > > Page::setTopContentInset() gets called *after* we set the new Window size
> > > > unfortunately.
> > > 
> > > Where is the size set? You might be able to reorder it, because TCI is sent
> > > in WebProcessCreationParameters, so it's not like we don't have it.
> > 
> > WebPageCreationParameters, whatever.
> 
> The logic for setting the new window size is in:
> RefPtr<Frame> createWindow(Frame& openerFrame, Frame& lookupFrame, const
> FrameLoadRequest& request, const WindowFeatures& features, bool& created)
> inside FrameLoader.cpp.
> 
> We first call chrome().createWindow() to create the Window.
> Then we compute the height we want.
> Finally we call chrome().setWindowRect().

And to make things a bit more complicated, between the window creation and setting the window size, there is a call to chrome().setToolbarsVisible(), which I believe would impact the topContentInset.