Using JAWT CALayer with QT

[Artem Ananiev]

On 8/6/2012 11:45 AM, jost wrote:
> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7181710

Thanks.

Artem

> 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
>>>>
>>>
>>>
>>
>>