Question

• In .NET a UserControl may be composed of Controls and it may be part of a Form or part of a bigger UserControl. One can design UserControls with a Visual Designer using the ToolBox Palette.

• I have found out that a java BeanForm is the analouge for a .NET UserControl.

• I can design a BeanForm with a visual Designer in NetBeans

• In my Library I can extend a BeanForm from any other Library and I can design the extended BeanForm with a visual Designer in NetBeans.

• In my main Project I can pick all my BeanForms from the Palette onto my frames.

So “BeanForm” is the java pendant for the “UserControl”.

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In .Net I can easily shape my UserControl to a Fish or to a Star or to whatever I like
by simply setting this.Region = new Region(graphicsPath).

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I know that Java is not as easy as C# and I have found Java Samples that partly describe the necessary steps BUT
I did not find a Shaped non-rectangular BeanForm Sample.

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Of course extending the MouseAdapter with a new special mouseClicked(MouseEvent e) — as many Samples do suggest — isnt enough – this is only a first step.

• Did they all forget about the Dragged-Event and the Focus Events and the Mouse-Entered Event and Mouse-Up Event and Mouse-Leave Event and all the other typical JComponent Events ??? – Such Component will SURELY NOT BEHAVE like a real Shaped JComponent should behave.

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Please give me a Sample for a OvalComponent-BeanForm that can be taken from the Palette onto my frame and that will behave like a REAL Shaped JComponent

It should cover All the necessary Mouse Events and all the necessary MouseMotion Events and all the Drag-Drop Events and all the Key-Events in case the Oval has the focus or in case the Mouse is over the Oval.

(e.g I should be enabled to use the Oval’s Mouse Events and to extend the Oval Component to a MovingOval Component that can be moved around within the frame …)

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If this is too much work for you then, please, outline and describe the steps I would have to implement – like MouseAdapter, KeyAdapter, maybe DragDropAdapter or whatever is necessary.

please, point me what to do!

many thanks in advance.

Answer 1

Every java.awt.Shape has a contains() method that you can use for hit testing in your MouseListener or Mouseadapter.