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RE: [ve-dev] Painting Custom widgets in Swing for VE .
|
Hi Rich ,
Thanks a lot. Based on your suggestion I was able to
move my code out of paint method succesfully. And was able to make it work as
desired.
-Thanks Again
Rashmi H.Ramachandra
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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| RE: [ve-dev] Painting
Custom widgets in Swing for VE . |
|
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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Subject
| RE: [ve-dev] Painting
Custom widgets in Swing for VE . |
|
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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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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