Re: How to grab pointer

From	Jeff Higgins <jeff@invalid.invalid>
Newsgroups	comp.lang.java.gui
Subject	Re: How to grab pointer
Date	2012-08-15 21:34 -0400
Organization	A noiseless patient Spider
Message-ID	<k0hie8$gc2$1@dont-email.me> (permalink)
References	(6 earlier) <k0h6v7$i3n$1@dont-email.me> <k0hc93$ivi$1@dont-email.me> <k0hd3h$n0j$1@dont-email.me> <k0hdtd$qfq$1@dont-email.me> <k0hgbv$6mi$1@dont-email.me>

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On 08/15/2012 08:58 PM, Jeff Higgins wrote:
> On 08/15/2012 08:16 PM, Jeff Higgins wrote:
>> On 08/15/2012 08:03 PM, Jeff Higgins wrote:
>>> On 08/15/2012 07:48 PM, Jeff Higgins wrote:
>>>> On 08/15/2012 06:18 PM, Jeff Higgins wrote:
>>>>> On 08/15/2012 05:48 PM, Jeff Higgins wrote:
>>>>>> On 08/15/2012 04:40 PM, FredK wrote:
>>>>>>>
>>>>>>> I generate a tree showing all of the GUI components of the app. I
>>>>>>> want the user to be able to point to a component in the app, then
>>>>>>> that item will be displayed as selected in the tree. So when the
>>>>>>> user
>>>>>>> presses the "Select" button, the cursor changes (say, to "hand"), my
>>>>>>> comnponent grabs the mouse so only it gets events;
>>>>
>>>> There's really no such thing as "grabbing the mouse". Events are fired
>>>> (put on the event queue) and consumed (how you do that is up to you).
>>>>
>>>> If your application has a mode of operation called
>>>> componentSelectorToolActive and you want all of certain events to be
>>>> processed by your ComponentSelectorTool then you will need to arrange
>>>> that.
>>>>
>>>> then thye user
>>>>>>> moves the cursor until is over some component anywhere on the
>>>>>>> screen,
>>>>>>> and clicks there.
>
> If this "component" is within your application containment hierarchies
> fine, if you are thinking of some random visual item on your platform
> desktop not associated with the AWT containment hierarchy you're out of
> luck with the Java APIs.

Also keep in mind that there is no central AWT Window Server
that keeps track of and communicates with AWT clients like
in the X windowing system.

>
>>>>>>
>>>>>> Each top level window that your application creates will
>>>>>> generate mousein/mouseout, focusin/focusout events.
>>>>>> Whats the problem?
>>>>>>
>>>>>
>>>>> You could even (and I just learned this, thanks)
>>>>> Toolkit.getDefaultToolkit().addAWTEventListener(l);
>>>>> plus
>>>>> see Window.getWindows().
>>>>>
>>>>>> My component receives the press event and figures
>>>>>>> out what component it is over and highlights the tree node that
>>>>>>> represents that component. I do not want the press event to be sent
>>>>>>> to the component under the click.
>>> You should probably be thinking in terms of "when my
>>> ComponentSelectorTool receives the press event it notifies my
>>> ComponentTreeDisplayWidget ...".
>>>
>> Just remember that events are placed on the queue in the order that
>> they are received but that event listeners can be notified in any order.
>>
>> Hope it helps. over
>>
>

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Thread

How to grab pointer FredK <fred.l.kleinschmidt@gmail.com> - 2012-08-15 10:45 -0700
  Re: How to grab pointer Knute Johnson <nospam@knutejohnson.com> - 2012-08-15 12:09 -0700
    Re: How to grab pointer FredK <fred.l.kleinschmidt@gmail.com> - 2012-08-15 12:45 -0700
      Re: How to grab pointer markspace <-@.> - 2012-08-15 13:28 -0700
        Re: How to grab pointer FredK <fred.l.kleinschmidt@gmail.com> - 2012-08-15 13:40 -0700
          Re: How to grab pointer markspace <-@.> - 2012-08-15 14:30 -0700
          Re: How to grab pointer Jeff Higgins <jeff@invalid.invalid> - 2012-08-15 17:48 -0400
            Re: How to grab pointer Jeff Higgins <jeff@invalid.invalid> - 2012-08-15 18:18 -0400
              Re: How to grab pointer Jeff Higgins <jeff@invalid.invalid> - 2012-08-15 19:48 -0400
                Re: How to grab pointer Jeff Higgins <jeff@invalid.invalid> - 2012-08-15 20:03 -0400
                Re: How to grab pointer Jeff Higgins <jeff@invalid.invalid> - 2012-08-15 20:16 -0400
                Re: How to grab pointer Jeff Higgins <jeff@invalid.invalid> - 2012-08-15 20:58 -0400
                Re: How to grab pointer Jeff Higgins <jeff@invalid.invalid> - 2012-08-15 21:34 -0400
                Re: How to grab pointer FredK <fred.l.kleinschmidt@gmail.com> - 2012-08-16 11:03 -0700
                Re: How to grab pointer Jeff Higgins <jeff@invalid.invalid> - 2012-08-16 16:54 -0400
                Re: How to grab pointer FredK <fred.l.kleinschmidt@gmail.com> - 2012-08-16 15:10 -0700
                Re: How to grab pointer Jeff Higgins <jeff@invalid.invalid> - 2012-08-16 21:17 -0400
                Re: How to grab pointer "John B. Matthews" <nospam@nospam.invalid> - 2012-08-16 20:40 -0400
                Re: How to grab pointer Jeff Higgins <jeff@invalid.invalid> - 2012-08-16 21:11 -0400
          Re: How to grab pointer Knute Johnson <nospam@knutejohnson.com> - 2012-08-15 15:05 -0700
          Re: How to grab pointer Jeff Higgins <jeff@invalid.invalid> - 2012-08-22 19:54 -0400
            Re: How to grab pointer Jeff Higgins <jeff@invalid.invalid> - 2012-08-22 20:45 -0400

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