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org.eclipse.draw2d
Class XYLayout
java.lang.Object
org.eclipse.draw2d.AbstractLayout
org.eclipse.draw2d.XYLayout
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All Implemented Interfaces:
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LayoutManager
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Direct Known Subclasses:
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FreeformLayout
- public class XYLayout
- extends
AbstractLayout
This class implements the
LayoutManager interface using the
XY Layout algorithm. This lays out the components using the layout constraints as
defined by each component.
Field Summary
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protected java.util.Map
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constraints
The layout contraints |
Method Summary
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protected
Dimension
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calculatePreferredSize
(
IFigure f,
int wHint,
int hHint)
Calculates and returns the preferred size of the input figure. |
java.lang.Object
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getConstraint
(
IFigure figure)
Returns the constraint for the given figure. |
Point
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getOrigin
(
IFigure parent)
Returns the origin for the given figure. |
void
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layout
(
IFigure parent)
Implements the algorithm to layout the components of the given container figure.
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void
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remove
(
IFigure figure)
Removes the given figure from this LayoutManager's list of figures. |
void
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setConstraint
(
IFigure figure,
java.lang.Object newConstraint)
Sets the layout constraint of the given figure. |
Methods inherited from class java.lang.Object
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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constraints
protected java.util.Map constraints
- The layout contraints
XYLayout
public XYLayout()
calculatePreferredSize
protected
Dimension calculatePreferredSize(
IFigure f,
int wHint,
int hHint)
- Calculates and returns the preferred size of the input figure. Since in XYLayout the
location of the child should be preserved, the preferred size would be a region which
would hold all the children of the input figure. If no constraint is set, that child
is ignored for calculation. If width and height are not positive, the preferred
dimensions of the child are taken.
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Specified by:
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calculatePreferredSize
in class
AbstractLayout
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Parameters:
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f - The figure -
wHint - The width hint -
hHint - The height hint
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Returns:
- The preferred size
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Since:
- 2.0
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See Also:
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AbstractLayout.calculatePreferredSize(IFigure, int, int)
getConstraint
public java.lang.Object getConstraint(
IFigure figure)
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Description copied from class:
AbstractLayout
- Returns the constraint for the given figure.
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Specified by:
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getConstraint
in interface
LayoutManager
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Overrides:
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getConstraint
in class
AbstractLayout
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Parameters:
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figure - The figure
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Returns:
- The constraint
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See Also:
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LayoutManager.getConstraint(IFigure)
getOrigin
public
Point getOrigin(
IFigure parent)
- Returns the origin for the given figure.
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Parameters:
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parent - the figure whose origin is requested
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Returns:
- the origin
layout
public void layout(
IFigure parent)
- Implements the algorithm to layout the components of the given container figure.
Each component is laid out using its own layout constraint specifying its size
and position.
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Parameters:
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parent - The figure -
See Also:
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LayoutManager.layout(IFigure)
remove
public void remove(
IFigure figure)
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Description copied from class:
AbstractLayout
- Removes the given figure from this LayoutManager's list of figures.
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Specified by:
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remove
in interface
LayoutManager
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Overrides:
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remove
in class
AbstractLayout
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Parameters:
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figure - The figure to remove -
See Also:
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LayoutManager.remove(IFigure)
setConstraint
public void setConstraint(
IFigure figure,
java.lang.Object newConstraint)
- Sets the layout constraint of the given figure. The constraints can only be of type
Rectangle .
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Specified by:
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setConstraint
in interface
LayoutManager
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Overrides:
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setConstraint
in class
AbstractLayout
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Parameters:
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figure - the child -
newConstraint - the child's new constraint -
Since:
- 2.0
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See Also:
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LayoutManager.setConstraint(IFigure, Object)
Copyright (c) IBM Corp. and others 2000, 2007. All Rights Reserved.
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