Using JAWT CALayer with QT

[jost]

http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7181710

jost

On Mon, Aug 6, 2012 at 2:34 AM, Mike Swingler <swingler at apple.com> wrote:

> Does anyone know if there is a bug tracking the creation of an OS
> X-specifc jawt_md.h? I'm not seeing one in either the jdk8 or the jdk7u-*
> repositories, and this is a pretty crucial part of the JNI story to be
> leaning on Apple's deprecated JavaVM.framework.
>
> ~Mike
>
> On May 21, 2012, at 2:55 PM, Jessica Finley <jfinley at tech4learning.com>
> wrote:
>
> > Update for posterity:
> >
> > So, I changed the awt.version back to JAWT_VERSION_1_4 and referenced
> the <JavaVM/jawt_md.h> instead of the JDK7 jawt_md.h (while continuing to
> link to the Java7 libs instead of the JavaVM framework) and it works!
> >
> > That seems odd to "mix and match" like that, but I suppose it makes
> sense.  I need Apple's header to define some stuff for me, yet I need JDK
> 7's libraries to do the execution.
> >
> > Thanks,
> > Jess
> >
> > On May 21, 2012, at 1:41 PM, Jessica Finley wrote:
> >
> >> So, I've modified the project to not use the JavaVM framework, and to
> instead point to jdk1.7.0_06.jdk/Contents/Home/jre/include headers and
> associated libraries (libawt.dylib, libjawt.dylib).  I left out the
> NativeDrawnCanvas.java and DrawingCanvas.m classes, since they use
> deprecated NSView based drawing.  Additionally, I modified the awt.version
> in LayerCanvas.m to be
> >>   awt.version = JAWT_VERSION_1_7 | JAWT_MACOSX_USE_CALAYER; // opt into
> the CALayer model
> >>
> >> Now, when I run the application, I no longer get the error ([java]
> JavaVM WARNING: JAWT_GetAWT must be called after loading a JVM), but
> instead the canvas doesn't draw anything at all.  I get no warnings about
> loading the resources for the layers or anything like that, so I'm assuming
> it's finding them (I made changes so instead of referencing the resources
> from the app bundle, they are referenced absolutely on the file system).
> >>
> >> Any ideas as to why nothing is being drawn at all?  Let me know if you
> want my modified example project to take a look at.
> >>
> >> Has anyone gotten any sort of CALayer drawing working with Java 7?  At
> this point, I'm not as much interested in QT specifics as much as just
> getting _something_ working.
> >>
> >> Thanks,
> >> Jess
> >>
> >>
> >> On May 17, 2012, at 3:55 PM, Jessica Finley wrote:
> >>
> >>> Hiya folks,
> >>>
> >>> It is my understanding that we are to use CALayer based embedding now
> instead of NSView based embedding.  Can someone explain to me how to do so?
>  Primarily, I am interested in playing a QT movie.  I've been looking at
> the JAWTExample project located here:
> >>>
> >>>
> https://developer.apple.com/library/mac/#samplecode/JAWTExample/Introduction/Intro.html#//apple_ref/doc/uid/DTS10000683-Intro-DontLinkElementID_2
> >>>
> >>> Which works beautifully in Java 6, but no so much in Java 7.  When run
> in Java 7 (after some finagling to launch the jar outside of its app bundle
> so it will run in Java 7), I get the following error when trying to draw
> the included QT movie:
> >>>   [java] JavaVM WARNING: JAWT_GetAWT must be called after loading a JVM
> >>>
> >>> I'm not really sure why this doesn't work in Java 7, since it is using
> CALayer embedding, as it should… I think.
> >>>
> >>> Thanks!
> >>> -Jess
> >>
> >
> >
>
>