I think this means that the PNG will be a relatively lower quality image
than the PDF version. Is that correct?

Also, is it possible to have a "Save" or "Download" button on the preview
box, rather than telling the user to right-click?

Thanks. Dan

On Thu, Feb 21, 2019 at 9:07 AM Maxim Solodovnik <solomax...@gmail.com>
wrote:

> Thanks :))
>
> Prepared image will have constant size something like 320x240, sort of
> preview :)
>
> On Thu, Feb 21, 2019, 20:00 Peter Dähn <da...@vcrp.de> wrote:
>
>> ok.. now I got it... sorry for that...
>>
>> The prepared scaled image has the dimension of the current client view or
>> the wb area?
>>
>> PS: much fun on your trip...
>>
>> Am 21.02.19 um 13:12 schrieb Maxim Solodovnik:
>>
>> Hello All,
>>
>> Am currently ooo (doing mountain skiing :)
>> Will try to answer in one email
>>
>> 1 save as pdf works, but for huge pdfs it requires jee*.xml tuning
>>
>> 2 right-click "save as" will not work on white-board.
>> As i wrote in initial email:
>>
>> when "Download as PNG" is clicked
>> 1) image is being prepared on the client
>> 2) small dialog with scaled image and text 'Please right click the
>> image and choose "Save as"' is displayed to the user
>>
>>
>> This is not yet implemented :)
>>
>> On Thu, Feb 21, 2019, 18:48 Peter Dähn <da...@vcrp.de> wrote:
>>
>>> "Save as" of smaller pics on wb also ends up with those empty pics. But
>>> right after draw on it, wb with pic will be saved (doesn't help with large
>>> pics).
>>>
>>> The download in the Files-tab works so far.
>>>
>>>
>>>
>>> But both JPG and original saves a .jpg-file!?
>>>
>>> Greetings Peter
>>>
>>> Am 21.02.19 um 09:19 schrieb Peter Dähn:
>>>
>>> and save as ends up in an empty png... this doesn't work as fix...
>>>
>>>
>>>
>>> Am 21.02.19 um 08:35 schrieb Peter Dähn:
>>>
>>> Hi there,
>>>
>>> Download as pdf doesn't work either...
>>>
>>> This one causes an error...
>>>
>>> ERROR 02-21 08:28:08.199 o.a.o.w.r.w.AbstractWbPanel:70
>>> [0.0-5443-exec-8] - Unexpected error while processing wbAction
>>> java.lang.NullPointerException: Name is null
>>>     at java.base/java.lang.Enum.valueOf(Enum.java:238)
>>>     at
>>> org.apache.openmeetings.web.room.wb.WbAction.valueOf(WbAction.java:21)
>>>     at
>>> org.apache.openmeetings.web.room.wb.AbstractWbPanel$1.respond(AbstractWbPanel.java:65)
>>>     at
>>> org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:598)
>>>     at
>>> org.apache.wicket.core.request.handler.ListenerRequestHandler.internalInvoke(ListenerRequestHandler.java:306)
>>>     at
>>> org.apache.wicket.core.request.handler.ListenerRequestHandler.invoke(ListenerRequestHandler.java:280)
>>>     at
>>> org.apache.wicket.core.request.handler.ListenerRequestHandler.invokeListener(ListenerRequestHandler.java:222)
>>>     at
>>> org.apache.wicket.core.request.handler.ListenerRequestHandler.respond(ListenerRequestHandler.java:208)
>>>     at
>>> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:914)
>>>     at
>>> org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65)
>>>     at
>>> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:282)
>>>     at
>>> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:253)
>>>     at
>>> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221)
>>>     at
>>> org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70)
>>>     at
>>> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206)
>>>     at
>>> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299)
>>>     at
>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
>>>     at
>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
>>>     at
>>> org.red5.logging.LoggerContextFilter.doFilter(LoggerContextFilter.java:84)
>>>     at
>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
>>>     at
>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
>>>     at
>>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200)
>>>     at
>>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
>>>     at
>>> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:607)
>>>     at
>>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
>>>     at
>>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
>>>     at
>>> org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668)
>>>     at
>>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
>>>     at
>>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
>>>     at
>>> org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
>>>     at
>>> org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
>>>     at
>>> org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834)
>>>     at
>>> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415)
>>>     at
>>> org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
>>>     at
>>> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
>>>     at
>>> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
>>>     at
>>> org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
>>>     at java.base/java.lang.Thread.run(Thread.java:834)
>>>
>>>
>>> In general I think simply point to the "Save as" dialog isn't very
>>> handy.
>>>
>>> Greetings Peter
>>>
>>> Am 21.02.19 um 06:24 schrieb Stefan Kühl:
>>>
>>> Morning ;-)
>>>
>>> Great, that should work fine.
>>>
>>> Greetz
>>>
>>> Stefan
>>>
>>>
>>>
>>>
>>> Am 21.02.2019 05:31, schrieb Maxim Solodovnik:
>>>
>>> Hello All,
>>>
>>> Recently Daniel Asher find out download whiteboard as png is not
>>> working for huge white board
>>> (10MB is huge :)) [1 
>>> <https://issues.apache.org/jira/browse/OPENMEETINGS-2018>]
>>>
>>> This seems to be sort of browser limitation, there is no error or
>>> whatever, download just silently fail for big white boards
>>>
>>> What I propose is to change the behavior of 'Download as PNG' as follows:
>>> when "Download as PNG" is clicked
>>> 1) image is being prepared on the client
>>> 2) small dialog with scaled image and text 'Please right click the
>>> image and choose "Save as"' is displayed to the user
>>>
>>> WDYT?
>>>
>>> [1] https://issues.apache.org/jira/browse/OPENMEETINGS-2018
>>>
>>>
>>>
>>>
>>>
>>

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