java.lang.Object
javax.swing.OverlayLayout
- All Implemented Interfaces:
- LayoutManager,- LayoutManager2,- Serializable
A layout manager to arrange components over the top
 of each other.  The requested size of the container
 will be the largest requested size of the children,
 taking alignment needs into consideration.
 The alignment is based upon what is needed to properly
 fit the children in the allocation area.  The children
 will be placed such that their alignment points are all
 on top of each other.
 
 Warning:
 Serialized objects of this class will not be compatible with
 future Swing releases. The current serialization support is
 appropriate for short term storage or RMI between applications running
 the same version of Swing.  As of 1.4, support for long term storage
 of all JavaBeans
 has been added to the java.beans package.
 Please see XMLEncoder.
- Since:
- 1.2
- 
Constructor SummaryConstructorsConstructorDescriptionOverlayLayout(Container target) Constructs a layout manager that performs overlay arrangement of the children.
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Method SummaryModifier and TypeMethodDescriptionvoidaddLayoutComponent(Component comp, Object constraints) Adds the specified component to the layout, using the specified constraint object.voidaddLayoutComponent(String name, Component comp) Adds the specified component to the layout.floatgetLayoutAlignmentX(Container target) Returns the alignment along the x axis for the container.floatgetLayoutAlignmentY(Container target) Returns the alignment along the y axis for the container.final ContainerReturns the container that uses this layout manager.voidinvalidateLayout(Container target) Indicates a child has changed its layout related information, which causes any cached calculations to be flushed.voidlayoutContainer(Container target) Called by the AWT when the specified container needs to be laid out.maximumLayoutSize(Container target) Returns the maximum dimensions needed to lay out the components contained in the specified target container.minimumLayoutSize(Container target) Returns the minimum dimensions needed to lay out the components contained in the specified target container.preferredLayoutSize(Container target) Returns the preferred dimensions for this layout given the components in the specified target container.voidRemoves the specified component from the layout.
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Constructor Details- 
OverlayLayoutConstructs a layout manager that performs overlay arrangement of the children. The layout manager created is dedicated to the given container.- Parameters:
- target- the container to do layout against
 
 
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Method Details- 
getTargetReturns the container that uses this layout manager.- Returns:
- the container that uses this layout manager
- Since:
- 1.6
 
- 
invalidateLayoutIndicates a child has changed its layout related information, which causes any cached calculations to be flushed.- Specified by:
- invalidateLayoutin interface- LayoutManager2
- Parameters:
- target- the container
 
- 
addLayoutComponentAdds the specified component to the layout. Used by this class to know when to invalidate layout.- Specified by:
- addLayoutComponentin interface- LayoutManager
- Parameters:
- name- the name of the component
- comp- the component to be added
 
- 
removeLayoutComponentRemoves the specified component from the layout. Used by this class to know when to invalidate layout.- Specified by:
- removeLayoutComponentin interface- LayoutManager
- Parameters:
- comp- the component to remove
 
- 
addLayoutComponentAdds the specified component to the layout, using the specified constraint object. Used by this class to know when to invalidate layout.- Specified by:
- addLayoutComponentin interface- LayoutManager2
- Parameters:
- comp- the component to be added
- constraints- where/how the component is added to the layout.
 
- 
preferredLayoutSizeReturns the preferred dimensions for this layout given the components in the specified target container. Recomputes the layout if it has been invalidated. Factors in the current inset setting returned by getInsets().- Specified by:
- preferredLayoutSizein interface- LayoutManager
- Parameters:
- target- the component which needs to be laid out
- Returns:
- a Dimension object containing the preferred dimensions
- See Also:
 
- 
minimumLayoutSizeReturns the minimum dimensions needed to lay out the components contained in the specified target container. Recomputes the layout if it has been invalidated, and factors in the current inset setting.- Specified by:
- minimumLayoutSizein interface- LayoutManager
- Parameters:
- target- the component which needs to be laid out
- Returns:
- a Dimension object containing the minimum dimensions
- See Also:
 
- 
maximumLayoutSizeReturns the maximum dimensions needed to lay out the components contained in the specified target container. Recomputes the layout if it has been invalidated, and factors in the inset setting returned bygetInset.- Specified by:
- maximumLayoutSizein interface- LayoutManager2
- Parameters:
- target- the component that needs to be laid out
- Returns:
- a Dimensionobject containing the maximum dimensions
- See Also:
 
- 
getLayoutAlignmentXReturns the alignment along the x axis for the container.- Specified by:
- getLayoutAlignmentXin interface- LayoutManager2
- Parameters:
- target- the container
- Returns:
- the alignment >= 0.0f && <= 1.0f
 
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getLayoutAlignmentYReturns the alignment along the y axis for the container.- Specified by:
- getLayoutAlignmentYin interface- LayoutManager2
- Parameters:
- target- the container
- Returns:
- the alignment >= 0.0f && <= 1.0f
 
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layoutContainerCalled by the AWT when the specified container needs to be laid out.- Specified by:
- layoutContainerin interface- LayoutManager
- Parameters:
- target- the container to lay out
- Throws:
- AWTError- if the target isn't the container specified to the constructor
 
 
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