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RE: [ve-dev] Painting Custom widgets in Swing for VE .
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Hi,
I'm sorry, but I still understand why
this has to be in the paint. At the time of the paint it is far too late
to add controls to a panel. Swing will get very confused if you try to
add components then.
You should create however many controls
you need at the time of the setting of the feature. You should add/remove/replace
components in the ComponentHeight or the No_of_Display_Items set methods
themselves within the composite object.
Thanks,
Rich
"H Ramachandra, Rashmi"
<rashmi.h.ramachandra@xxxxxxx>
Sent by: ve-dev-bounces@xxxxxxxxxxx
11/09/2005 04:10 AM
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Subject
| RE: [ve-dev] Painting Custom
widgets in Swing for VE . |
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Hi Rich,
Thanks for the input. But our
requirement is not just to apply a property to the whole component . Let
us explain more about our composite object. The composite component has
two of the properties as follows.
ComponentHeight
No_of_Display_Items.
The component Height is the height of the
swing widgets inside the panel . Not the height of the panel itself.
No_of_Display_Items Specifies the number
of item instances displayed for the item ,if No_of_Display_Items is set
to 3 to , we create a TextField, by default we want to 3 TextFields visible
inside the composite component like three rows of textField. To get only
one textField, set No_of_Display_Items to 1.
The height of the panel depends on two aspects
that is No_of_Display_Items
and Component height. Depending on the No_of_Display_Items,
we duplicate the
swing widget that many number of times inside
the panel. Hence we have "No_of_Display_Items" number of rows
of the swing widget inside the panel.
You can see the example in the image attachments
with this mail.
Pic1.jpg shows a single swing widget
inside the panel.(No_of_Display_Items=1)
Pic2.jpg shows multiple swing widget inside
the panel. (No_of_Display_Items=3)
Can you please help how do I go about implementing
such a kind of task.
Thanks in Advance,
Best Regards
Rashmi H.Ramachandra
From: ve-dev-bounces@xxxxxxxxxxx
[mailto:ve-dev-bounces@xxxxxxxxxxx] On Behalf Of Rich Kulp
Sent: Tuesday, 08 November 2005 8:23 PM
To: Discussions people developing code for the Visual Editor project
Subject: RE: [ve-dev] Painting Custom widgets in Swing for VE .
I think this is the wrong approach. It should be done on the set of the
property itself, not during the paint. In the complex composite widget,
when the property is set it should propagate it down to the children. The
paint handler is for doing painting not setting properties. It is often
too late, the children may of already painted.
Rich
"H Ramachandra, Rashmi"
<rashmi.h.ramachandra@xxxxxxx>
Sent by: ve-dev-bounces@xxxxxxxxxxx
11/08/2005 03:44 AM
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people developing code for the Visual Editor project" <ve-dev@xxxxxxxxxxx>
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Subject
| RE: [ve-dev] Painting Custom
widgets in Swing for VE . |
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Hi Rich,
We are building complex composite widgets. For Example : a single
component consisting of a Text Field and a checkbox put inside a panel.
The composite component here is the panel. When we change properties for
the composite component, we want it to reflect to the child component,
which are placed inside the composite component. Hence we require a paint
method to add components and to change properties related to the whole
of the composite component.
So can you please help us resolving this issue of paint method?
Thanks in Advance
Best Regards,
Rashmi H.Ramachandra.
From: ve-dev-bounces@xxxxxxxxxxx
[mailto:ve-dev-bounces@xxxxxxxxxxx] On Behalf Of Rich Kulp
Sent: Monday, 07 November 2005 7:57 PM
To: Discussions people developing code for the Visual Editor project
Subject: Re: [ve-dev] Painting Custom widgets in Swing for VE .
Why are you changing it in the paint itself? Why not change it directly
on the component when the property itself is changed. Then it would only
be done once.
Rich
"H Ramachandra, Rashmi"
<rashmi.h.ramachandra@xxxxxxx>
Sent by: ve-dev-bounces@xxxxxxxxxxx
11/07/2005 12:32 AM
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Please respond to
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Subject
| [ve-dev] Painting Custom
widgets in Swing for VE . |
|
Hi all ,
We are using eclipse 3.1 and VE 1.1 for our
project. We are trying to build custom widgets in Swing, that paint themselves
when any property such as Color (Back Ground or Foreground) is changed.
We have two questions here,
1.) How do we debug and follow the flow of
execution? (Sysout's are not working here inside custom widgets).
2.) How do we customize the paint method to
pick up and apply property from the user defined field?
For E.g.:-
We have a field called 'backGroundColor' ,
which has a setter and getter methods. On every change of this property
by the user from the property palette. We want to change the color of the
component .
this.setBackGround(this.getBackGroundColor());
We have used the above code inside the
paint method. Since paint method is called ample number of times the eclipse
runtime hangs and becomes very slow. It even does not reflect the property
changes. Is there any way we can handle these custom properties inside
the paint method.
Our paint method looks like this
public void paint(Graphics g)
{
super.paint(g);
if(flag)
{
this.setBackground(this.getBackgroundColor());
this.setOpaque(true);
}
flag = false;
}
We used flag to restrict repainting of the
component continuously. But we are unable to find how to reset the flag
and call the paint, whenever there is a property change.
For the above component and the swing container
I am using null layout.
Any help in this regard is greatly appreciated.
Thank you and Best Regards.
Rashmi H.Ramachandra _______________________________________________
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