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Class java.awt.swing.OverlayLayout

java.lang.Object
    |
    +----java.awt.swing.OverlayLayout

public class OverlayLayout
extends Object
implements 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 Swing1.0 applications. It will not be possible to load serialized Swing1.0 objects with future releases of Swing. The JDK1.2 release of Swing will be the compatibility baseline for the serialized form of Swing objects.


Constructor Summary
 OverlayLayout(Container target)
Construct a layout manager that performs overlay arrangment of the children.
 

Method Summary
void  addLayoutComponent(String name, Component comp)
Adds the specified component to the layout.
void  addLayoutComponent(Component comp, Object constraints)
Adds the specified component to the layout, using the specified constraint object.
float  getLayoutAlignmentX(Container target)
Returns the alignment along the x axis for the container.
float  getLayoutAlignmentY(Container target)
Returns the alignment along the y axis for the container.
void  invalidateLayout(Container target)
Indicates a child has changed it's layout related information which causes any cached calculations to be flushed.
void  layoutContainer(Container target)
 
Dimension  maximumLayoutSize(Container target)
Returns the minimum dimensions needed to layout the components contained in the specified target container.
Dimension  minimumLayoutSize(Container target)
Returns the minimum dimensions needed to layout the components contained in the specified target container.
Dimension  preferredLayoutSize(Container target)
Returns the preferred dimensions for this layout given the components in the specified target container.
void  removeLayoutComponent(Component comp)
Removes the specified component from the layout.
 
Methods inherited from class java.lang.Object
 clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

OverlayLayout

public OverlayLayout(Container target)
Construct a layout manager that performs overlay arrangment of the children. The layout manager created is dedicated to the given container.
Parameters:
target - The container to do layout against.
Method Detail

invalidateLayout

public void invalidateLayout(Container target)
Indicates a child has changed it's layout related information which causes any cached calculations to be flushed.
Implements:
invalidateLayout in interface LayoutManager2

addLayoutComponent

public void addLayoutComponent(String name,
                               Component comp)
Adds the specified component to the layout. Not used by this class.
Implements:
addLayoutComponent in interface LayoutManager2
Parameters:
name - the name of the component
comp - the the component to be added

removeLayoutComponent

public void removeLayoutComponent(Component comp)
Removes the specified component from the layout. Not used by this class.
Parameters:
comp - the component to remove

addLayoutComponent

public void addLayoutComponent(Component comp,
                               Object constraints)
Adds the specified component to the layout, using the specified constraint object.
Implements:
addLayoutComponent in interface LayoutManager2
Parameters:
comp - the component to be added
constraints - where/how the component is added to the layout.

preferredLayoutSize

public Dimension preferredLayoutSize(Container target)
Returns the preferred dimensions for this layout given the components in the specified target container.
Parameters:
target - the component which needs to be laid out
See Also:
Container, minimumLayoutSize

minimumLayoutSize

public Dimension minimumLayoutSize(Container target)
Returns the minimum dimensions needed to layout the components contained in the specified target container.
Parameters:
target - the component which needs to be laid out
See Also:
preferredLayoutSize

maximumLayoutSize

public Dimension maximumLayoutSize(Container target)
Returns the minimum dimensions needed to layout the components contained in the specified target container.
Implements:
maximumLayoutSize in interface LayoutManager2
Parameters:
target - the component which needs to be laid out
See Also:
preferredLayoutSize

getLayoutAlignmentX

public float getLayoutAlignmentX(Container target)
Returns the alignment along the x axis for the container. If the major axis of the box is the x axis the default alignment will be returned, otherwise the alignment needed to place the children along the x axis will be returned.
Implements:
getLayoutAlignmentX in interface LayoutManager2

getLayoutAlignmentY

public float getLayoutAlignmentY(Container target)
Returns the alignment along the y axis for the container. If the major axis of the box is the y axis the default alignment will be returned, otherwise the alignment needed to place the children along the y axis will be returned.
Implements:
getLayoutAlignmentY in interface LayoutManager2

layoutContainer

public void layoutContainer(Container target)

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