javax.swing
Class SpringLayout
- LayoutManager, LayoutManager2
A very flexible layout manager. Components are laid out by defining the
relationships between them. The relationships are expressed as
Springs. You can attach a Spring for each edge of a component and
link it to an edge of a different component. For example, you can say,
the northern edge of component A should be attached to the southern edge
of component B, and the space between them should be something between
x and y pixels, and preferably z pixels.
While quite simple, this layout manager can be used to emulate most other
layout managers, and can also be used to solve some layout problems, which
would be hard to solve with other layout managers.
void | addLayoutComponent(Component component, Object constraint)- Adds a layout component and a constraint object to this layout.
|
void | addLayoutComponent(String name, Component c)- Adds a layout component and a constraint object to this layout.
|
Spring | getConstraint(String edgeName, Component c)- Returns the constraint of the edge named by
edgeName.
|
SpringLayout.Constraints | getConstraints(Component c)- Returns the
SpringLayout.Constraints object associated with the specified
component.
|
float | getLayoutAlignmentX(Container p)- Returns the X alignment of the Container
p.
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float | getLayoutAlignmentY(Container p)- Returns the Y alignment of the Container
p.
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void | invalidateLayout(Container p)- Recalculate a possibly cached layout.
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void | layoutContainer(Container p)- Lays out the container
p.
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Dimension | maximumLayoutSize(Container p)- Calculates the maximum size of the layed out container.
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Dimension | minimumLayoutSize(Container p)- Calculates the minimum size of the layed out container.
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Dimension | preferredLayoutSize(Container p)- Calculates the preferred size of the layed out container.
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void | putConstraint(String e1, Component c1, int pad, String e2, Component c2)- Attaches the edge
e1 of component c1 to
the edge e2 of component c2 width the
fixed strut pad.
|
void | putConstraint(String e1, Component c1, Spring s, String e2, Component c2)- Attaches the edge
e1 of component c1 to
the edge e2 of component c2 width the
Spring s.
|
void | removeLayoutComponent(Component c)- Removes a layout component.
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clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
EAST
public static final String EAST
The right edge of a component.
NORTH
public static final String NORTH
The top edge of a component.
SOUTH
public static final String SOUTH
The bottom edge of a component.
WEST
public static final String WEST
The left edge of a component.
SpringLayout
public SpringLayout()
Creates a new SpringLayout.
addLayoutComponent
public void addLayoutComponent(String name,
Component c) Adds a layout component and a constraint object to this layout.
This method is usually only called by a
Containers add
method. This method does nothing, since SpringLayout does not manage
String-indexed components.
- addLayoutComponent in interface LayoutManager
name - the name.c - the component to be added.
getConstraint
public Spring getConstraint(String edgeName,
Component c) Returns the constraint of the edge named by edgeName.
edgeName - the name of the edge, one of EAST,
WEST, NORTH or SOUTH.c - the component from which to get the constraint.
- the constraint of the edge
edgeName of the
component c.
putConstraint
public void putConstraint(String e1,
Component c1,
int pad,
String e2,
Component c2) Attaches the edge e1 of component c1 to
the edge e2 of component c2 width the
fixed strut pad.
e1 - the edge of component 1.c1 - the component 1.pad - the space between the components in pixels.e2 - the edge of component 2.c2 - the component 2.
putConstraint
public void putConstraint(String e1,
Component c1,
Spring s,
String e2,
Component c2) Attaches the edge
e1 of component
c1 to
the edge
e2 of component
c2 width the
Spring s.
e1 - the edge of component 1.c1 - the component 1.s - the space between the components as a Spring object.e2 - the edge of component 2.c2 - the component 2.
SpringLayout.java --
Copyright (C) 2004, 2006, Free Software Foundation, Inc.
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