gmane.comp.gnome.bindings.java

Java, GTK and Windows

Pablo Zinc — 2012-02-22T01:54:19

Hi! I’d like to use Java with GTK in Microsoft Windows, do you have any information or advice about this? Some (incompatibility) problem could occur? Thank you very much------------------------------------------------------------------------------
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show a ColorButton into a collumn of aTreeView

lameire alexis — 2012-02-06T13:03:32

Hi,
I understood the way to use the model view of treeview widget but i need
a custom use of this widget.
I would like to store in the model a color, that must be shown in the
treeview.
To make this I need first to create my own CellRenderer, i would like to
know how to do this. 
Secondly to store my color into the model i need to know how to make my
own DataColumn and finally, how to use it in the listStore model.

Thanks for your attention
Alexis Lameire


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Gtk Warnings

cyber python — 2012-02-05T14:52:36

Hello,
I am writing an application using java-gnome and if a gtk theme that
causes warnings is used the whole application crashes thus I'd like to
know if there is a way to distinguish warnings thrown as Exceptions.

Best regards,
Georgios Migdos.

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Update 4.1.1 PPA package

Guillaume Mazoyer — 2011-11-04T16:47:15

Hello,

Several Ubuntu and Debian users reported the crasher due to a
ClassCastException with the Box inside a Dialog.
The fix now lands in mainline but the package in the Debian and Ubuntu
repository doesn't contain this fix.
So I have backported that fix in new package in the PPA[1] in this way the
Ubuntu users will be able to get the crasher fixed. For Debian this will
have to wait for the 4.1.2 release ;)


Cheers,

[1] https://launchpad.net/~java-gnome/+archive/ppa

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Pixbuf memory leak

William Temperley — 2011-10-19T17:01:56

Hi all,

I've come across a memory leak with Pixbuf - whenever I construct one,
lots of memory is leaked. The test below leaks ~200MB when loading a
6kb image 10,000 times. Commenting out the Pixbuf construction leads
to steady memory use.
This memory usage isn't reported by the JVM.  I've come across this
behaviour with 4.0.19 and 4.1.1.

Whilst I'd love a proper solution to this, I wonder if anyone has a
quick and dirty workaround for freeing up this memory? I'm doing a
production run of approximately 6000 maps for a website, which grinds
to a halt after 100 or so maps, using all 8GB of RAM.

Thanks

Will Temperley


  < at >Test
  public void itLeaks() throws IOException {
    Gtk.init(null);

    for (int i = 0; i < 10000; i++) {
      System.out.println(i);

      BufferedImage b = ImageIO.read(new File("/tmp/x.png"));
      ByteArrayOutputStream bos = new ByteArrayOutputStream();
      ImageIO.write(b, "PNG", bos);
      byte[] arr = bos.toByteArray();

      //comment out and memory usage remains steady
      Pixbuf pb = new Pixbuf(arr);

    }

  }

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Accessing e-d-s contacts from Java

2011-10-11T18:08:26

Hi all,

how are you? I'm trying to access e-d-s contacts from a Java application,
but I haven't found any way of doing it and I was wondering whether there's
any wrapper for libecal or something like that.

Any help would be appreciated.
Thanks in advance.
Pablo.
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How to use GObject class from outside thepackage

George Cheng — 2011-10-09T19:07:17

Why is GObject class only accessible from within the package?


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A use case of Gtk.mainIterationDo()

Guillaume Mazoyer — 2011-09-03T14:40:07

After releasing the last version of my program[1] a user reported a
strange bug caused by the interruption of the GTK main loop.

Basically, my program provides an Assistant so the user is guided to
split or merge files. In the last page of the assistant, when confirming
the split/merge the main window is refreshed with some new data and a
thread is started to proceed to the requested action. The tricky point
is that the window *must* be fully refreshed before the thread starts.

So when the interface is not fully refreshed an error message is
displayed and the action is canceled. The origin of the bug I had was
just this. The thread interrupted and started before the GTK main loop
finish the refresh of the UI. It is invisible to the user because all of
this occurs pretty quickly.

I finally found a fix for that using 2 recently exposed methods:
  - Gtk.eventsPending()
  - Gtk.mainIterationDo()

You can take a look at the fix by following this link:
  - http://trac.gnome-split.org/changeset/265
or by grabbing the code.

This fix forces the GTK main loop to run until there is no more things
to proceed.

What do you think about this fix?

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java-gnome 4.0.20 and 4.1.1 released

Andrew Cowie — 2011-07-11T04:46:01

There's a new version of java-gnome!

Release notes
http://java-gnome.sourceforge.net/NEWS.html#4.1.1

Tarball
http://ftp.gnome.org/pub/gnome/sources/java-gnome/4.1/java-gnome-4.1.1.tar.bz2

The java-gnome 4.1 series depends on GNOME 3.

++

Simultaneously there has also been the release of 4.0.20, It is meant as
a porting aide to help you cross from GTK 2.x to GTK 3.x. If your code
builds cleanly against 4.0.20 then you should be ok when your system
upgrades to GTK 3.0 and you install java-gnome 4.1 which builds against
it.

We're not really planning on making any more releases in the 4.0 series,
but if someone backports an improvement or serious bugfix then of course
we'll do our best to merge it.

++

Meanwhile, new development in the '4.1' series is welcome. See
HACKING :)

AfC
Sydney

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Website changes

Andrew Cowie — 2011-06-20T03:43:44

We've got an API break coming up, and to support that I've completed a
minor refactoring of the java-gnome website.

What used to be

http://java-gnome.sourceforge.net/4.0/lists/

is now 

http://java-gnome.sourceforge.net/lists/

This was a good idea because we're about to have 4.1 API documentation
and I wanted it to be available in parallel with the [old] 4.0 API
documentation, ie instead of

http://java-gnome.sourceforge.net/4.0/doc/api/

we now have 

http://java-gnome.sourceforge.net/doc/api/4.0/ and
http://java-gnome.sourceforge.net/doc/api/4.1/

Thought you might want to know.

There's a redirect in place.

AfC
Sydney

Glade File Parsing

RAGHAVENDRA T — 2011-06-18T14:31:05

Java_Gnome Library classes appears to parse only the libglade files. Is
there a method to use the Glade glade file generated by Glade 3.6.
The file generated by Glade 3.6 is compatible without parsing.

So is there a method to load a file without parsing it.

Thanks
Raghavendra
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Quitting windows and apps

Adam Balan — 2011-04-26T17:08:11

 

Hi All,

 

Let's assume I have Program X that starts window c. Window c can create a
new instance of its self by going something like:

 

C c = new C();

c.newC(); // this starts the new instance.

 

So now you have the main Window running along with a identical window
sitting on top of it. My issue is that when I close one window I don't want
all my windows to close. Current I am using Gtk.mainQuit(); to close
windows. What's the proper way of doing this without actually closing all
the windows tied to window c including its self? This should also apply when
I click the x in the top.

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TreeView doesn't show with Glade

Luis Muñoz Villarreal — 2011-02-17T18:34:40

Hi!

I have a problem with the TreeView and Glade

I'm using:
libjava-gnome 4.0.14
Glade 3.6.7
Eclipse 3.6.1
Ubuntu 10.04

For example, in the next code, where I don't use glade, the TreeView show
the information of TreeModel
---------------8<---------------------
public class ExampleWithoutGlade {
    public ExampleWithoutGlade() {
     Window win = new Window();
        DataColumnString placeName = new DataColumnString();
        ListStore model = new ListStore(new DataColumn[] { placeName });

        TreeIter row = model.appendRow();
        model.setValue(row, placeName, "Line 1");
        row = model.appendRow();
        model.setValue(row, placeName, "Line 2");
        row = model.appendRow();
        model.setValue(row, placeName, "Line 3");

        TreeView treeview = new TreeView(model);
 win.add(treeview);
        TreeViewColumn vertical = treeview.appendColumn();
        vertical.setTitle("Lines");
        CellRendererText renderer = new CellRendererText(vertical);
        renderer.setMarkup(placeName);

        win.showAll();

        win.connect(new Window.DeleteEvent() {
            public boolean onDeleteEvent(Widget source, Event event) {
                Gtk.mainQuit();
                return false;
            }
        });
    }

    public static void main(String[] args) {
        Gtk.init(args);
        new ExampleWithoutGlade();
        Gtk.main();
    }
}
----------------------------------------

However, when I use the Glade interface, the TreeView doesn't show with the
information of TreeModel
---------------8<---------------------
public class ExampleWithGlade {
    public ExampleWithGlade() throws FileNotFoundException {
     XML xmlWin = Glade.parse("rsc/example.glade", "win");
     XML xmlTreeView = Glade.parse("rsc/example.glade", "treeview");

     Window win = (Window) xmlWin.getWidget("win");
     TreeView treeview = (TreeView) xmlTreeView.getWidget("treeview");

        DataColumnString placeName = new DataColumnString();
        ListStore model = new ListStore(new DataColumn[] { placeName });

        TreeIter row = model.appendRow();
        model.setValue(row, placeName, "Line 1");
        row = model.appendRow();
        model.setValue(row, placeName, "Line 2");
        row = model.appendRow();
        model.setValue(row, placeName, "Line 3");

        treeview.setModel(model);
         TreeViewColumn vertical = treeview.appendColumn();
        vertical.setTitle("Lines");
        CellRendererText renderer = new CellRendererText(vertical);
        renderer.setMarkup(placeName);

        win.showAll();

        win.connect(new Window.DeleteEvent() {
            public boolean onDeleteEvent(Widget source, Event event) {
                Gtk.mainQuit();
                return false;
            }
        });
    }

    public static void main(String[] args) throws FileNotFoundException {
        Gtk.init(args);
        new ExampleWithGlade();
        Gtk.main();
    }
}
----------------------------------------

The glade file:
Preferences: libglade + gtk+ 2.12
---------------8<---------------------
<?xml version="1.0"?>
<glade-interface>
  <!-- interface-requires gtk+ 2.12 -->
  <!-- interface-naming-policy project-wide -->
  <widget class="GtkWindow" id="win">
    <property name="title" translatable="yes">.</property>
    <child>
      <widget class="GtkTreeView" id="treeview">
        <property name="visible">True</property>
        <property name="can_focus">True</property>
      </widget>
    </child>
  </widget>
</glade-interface>
----------------------------------------

I don't undestand the reason of this issue.
Could you help me?

Best regards
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java-gnome 4.0.19 released

Andrew Cowie — 2011-02-17T04:21:33

There's a new version of java-gnome!

Release notes
http://java-gnome.sourceforge.net/4.0/NEWS.html#4.0.19

Tarball
http://ftp.gnome.org/pub/gnome/sources/java-gnome/4.0/java-gnome-4.0.19.tar.bz2

Ubuntu package (thanks Guillaume!)
https://launchpad.net/~java-gnome/+archive/ppa

Gentoo package (thanks Kenneth and Serkan!)
http://packages.gentoo.org/package/dev-java/java-gnome/


Anyone using java-gnome to develop lovely applications is, as ever,
invited to come hang out with us in #java-gnome on irc.gimp.net and chat
with us about what you're up to. We'd love to see you.

AfC
Sydney

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Trivia: menus

Andrew Cowie — 2011-02-11T05:55:50

Trivia point of the day:

If you hide a MenuBar, then any accelerators you've hooked up via the
various MenuItem's setAccelerator() cease to function.

        "That's annoying"

The solution is to create Actions, use Action's setAccelerator(), and
then Action's createMenuItem() to get yourself {drum role} a MenuItem,
which you can then use. And meanwhile the accelerators work regardless.

Yeay.

AfC
Sydney

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Email attachment,body parsing via GMime on Java

Sharma, Ashish — 2011-02-08T19:06:27

Hi,

I am using a small java smtp library (http://code.google.com/p/subethasmtp/), by this I need to parse the incoming emails in separate file components viz body, attachments etc.

I am trying to use GMime library in my Java code. Has anybody tried this already. 

If yes then please share your experience.

If no, can somebody please guide me what are the requirements and interfaces that I can use for writing JNI for GMime.

My communication(http://mail.gnome.org/archives/gmime-devel-list/2011-February/msg00000.html) on GMime developer mailing list has directed me to contact here as java-gnome binding can give me idea on how I can write java bindings for GMime.

I need an approach that takes in the smtp data stream and returns me with an array of attachment references or streams in fully parsed out form in java. 

Please help.

Thanks in advance

Ashish Sharma

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Enforcing documentation quality

Nick Khamis — 2011-01-19T01:52:46

We have been working on a project called the
JavadocMiner<http://www.rene-witte.net/automatic-quality-assessment-source-code-comments-javadocminer-nldb2010>that
evaluates the quality
of Javadoc comments. Included in our list of metrics are the readability
measures (Flesch, Fog and Kincaid). This is not the typical Javadoc
syntactic analysis tool provided by Oracle using the docCheckDoclet, or the
similar
tool provided by checkstyle. We analyze the internal quality of the Javadoc
comment
itself, as well as the syntactic quality such as sync etc..
If you would like to use the tool to analyze the different applications of
your project
we would be happy to open source it for you.

Cheers,

Ninus.
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Unable to Compile Example

Dominik Gabi — 2011-01-14T12:18:46

Hi,

maybe this is a stupid question but I seem to be unable to compile
the ExampleDrawingInExposeEvent.java example. This is the output I get
on my Ubuntu (10.10) system:

dominik< at >EeePC:~/Desktop$ javac -cp /usr/share/java/gtk.jar:.
ExampleDrawingInExposeEvent.java 
ExampleDrawingInExposeEvent.java:87: cannot find symbol
symbol  : constructor Context(org.gnome.gdk.EventExpose)
location: class org.freedesktop.cairo.Context
                 cr = new Context(event);
                      ^
1 error

Did I forget to include something in my classpath? I was looking for the
org.freedesktop package but could not find it... Any hints as to what I
might be doing wrong?

Thanks in advance,
   Dominik.




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Image handling in 4.0.18

William Temperley — 2011-01-06T12:09:11

Dear all

I've been using Java-Gnome to produce lovely PDF maps for some time
now, however the new image handling behaviour in 4.0.18 has
considerably changed their appearance. Am I correct in thinking PNGs
are now being converted to JPEGs behind the scenes perhaps?

Links to before and after examples, produced with the same code but
different versions of java-gnome:

With 4.0.14:
http://www.map.ox.ac.uk/media/temp/DJI_Pf_PR.pdf
With 4.0.18:
http://www.map.ox.ac.uk/media/temp/DJI_Pf_PR_4-0-18.pdf


Best regards

Will Temperley

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java-gnome 4.0.18 released

Andrew Cowie — 2010-12-30T22:24:22

There's a new version of java-gnome!

Release notes
http://java-gnome.sourceforge.net/4.0/NEWS.html#4.0.17

Tarball
http://ftp.gnome.org/pub/gnome/sources/java-gnome/4.0/java-gnome-4.0.18.tar.bz2

Ubuntu package (thanks Guillaume!)
https://launchpad.net/~java-gnome/+archive/ppa

Gentoo package (thanks Kenneth and Serkan!)
http://packages.gentoo.org/package/dev-java/java-gnome/


Anyone using java-gnome to develop lovely applications is, as ever,
invited to come hang out with us in #java-gnome on irc.gimp.net and chat
with us about what you're up to. We'd love to see you.

AfC
Sydney




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(no subject)

Brandon Thomas — 2010-12-20T04:13:41

So I have an image from a Pixbuf in a fixed container and I was
wondering if there was any type of online resources or anyone could
provide some insight on how I might be able to allow the user to drag
the image to another location within the fixed area.  The fixed area is
set in a scrollable viewport.

Thanks,
bt
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