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Re: [platform-swt-dev] SWT browser
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The mouse event problem may be related to a bug I fixed recently. See
https://bugs.eclipse.org/bugs/show_bug.cgi?id=337499 ... Plugin2 reparents
the applet into a new window and we weren't re-registering with the new
window for events.
That's very interesting and may explain a lot actually about the mouse
events and scrolling issues I was experiencing.
I will test this and update the bug report.
Dermot
----- Original Message -----
From: "Scott Kovatch" <skovatch.swt@xxxxxxxxx>
To: "Eclipse Platform SWT component developers list."
<platform-swt-dev@xxxxxxxxxxx>
Sent: Friday, February 18, 2011 2:18 PM
Subject: Re: [platform-swt-dev] SWT browser
On Feb 18, 2011, at 9:29 AM, Dermot Doherty wrote:
Applet performance is sluggish, which is not a SWT issue. Quick
explanation: To get applets and other heavy weight components to blend
better and integrate/overlap light-weight component in the surrounding
web-page, Apple changed the way that plugins are drawn. Java Plugin2 on
Mac now forces all rendering to an offscreen buffer and then draws it
through the CoreGraphics api, which is a great idea actually, but affects
the performance of the applet. It causes an unacceptable delay when
scrolling in an applet and a slight delay when typing in an applet. From
what I am reading it also breaks the frame rate on OpenGL Applets (JOGL &
LWJGL) - http://lwjgl.org/forum/index.php?topic=3341.0. Also, mouse over
events are not delivered to the applet.... clicks are.
The mouse event problem may be related to a bug I fixed recently. See
https://bugs.eclipse.org/bugs/show_bug.cgi?id=337499 ... Plugin2 reparents
the applet into a new window and we weren't re-registering with the new
window for events.
And diverting a bit off topic here.... the new drawing architecture likely
explains another problem I was looking at with Chris Deckers. If you try
to display a page with Flash content (Flash 10.1 or later) in the Browser
widget inside an applet the Flash content only draws when the applet is
dragged out of the web page. This is because Flash is using CALayers for
its drawing. I haven't found a way to compensate for this in SWT, or see
if there even is a way to do it.
Recent Mac Java builds will let you obtain a CALayer instead of an NSView,
which is how we normally parent the embedded shell. Using that to back
the NSView might be a possible solution.
-- Scott K.
------------------
Scott Kovatch
Pleasanton, CA
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