Re: [Java-gnome-developer] Question: Gtk+ images drawing using Cairo ? - Button.onClicked ?

[Andrew C. <an...@op...>]

On Sat, 2009-01-10 at 00:45 +0100, Goundy wrote:
> requires refreshing the game area each time  a [something
> happens] ...I do drawing in the ExposeEvent of an Image 
> just like the example

So those would probably have better been DrawingArea instead of Image;
I've recently been doing some work with Poppler and did up the basics of
DrawingArea while I was at it (it was pretty preliminary). 

Ping me next time we're online together I can tell you how to cherry
pick it from the branch it's on. [it's revno 594 on my 'poppler' branch]
http://research.operationaldynamics.com/bzr/java-gnome/hackers/andrew/poppler/


> but I really don't see how should 
> I do to be able to draw at a given moment !

I think what you want is Widget's getWindow()
http://java-gnome.sourceforge.net/4.0/doc/api/org/gnome/gtk/Widget.html#getWindow()

then Window's invalidate()
http://java-gnome.sourceforge.net/4.0/doc/api/org/gnome/gdk/Window.html#invalidate(org.gnome.gdk.Rectangle,%20boolean)

Let us know if it works!

++

As for your other problem, you'll only get Button.Clicked if the thing
you are drawing on (over) is a Button.

You may want Widget.ButtonPressEvent
http://java-gnome.sourceforge.net/4.0/doc/api/org/gnome/gtk/Widget.ButtonPressEvent.html

AfC
Sydney

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Andrew Frederick Cowie

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