Class GroupLayout.ParallelGroup
- Enclosing class:
- GroupLayout
Group that aligns and sizes its children.
 ParallelGroup aligns its children in
 four possible ways: along the baseline, centered, anchored to the
 leading edge, or anchored to the trailing edge.
 Baseline
AParallelGroup that aligns its children along the
 baseline must first decide where the baseline is
 anchored. The baseline can either be anchored to the top, or
 anchored to the bottom of the group. That is, the distance between the
 baseline and the beginning of the group can be a constant
 distance, or the distance between the end of the group and the
 baseline can be a constant distance. The possible choices
 correspond to the BaselineResizeBehavior constants
 CONSTANT_ASCENT and
 CONSTANT_DESCENT.
 
 The baseline anchor may be explicitly specified by the
 createBaselineGroup method, or determined based on the elements.
 If not explicitly specified, the baseline will be anchored to
 the bottom if all the elements with a baseline, and that are
 aligned to the baseline, have a baseline resize behavior of
 CONSTANT_DESCENT; otherwise the baseline is anchored to the top
 of the group.
 
 Elements aligned to the baseline are resizable if they have
 a baseline resize behavior of CONSTANT_ASCENT or
 CONSTANT_DESCENT. Elements with a baseline resize
 behavior of OTHER or CENTER_OFFSET are not resizable.
 
 The baseline is calculated based on the preferred height of each
 of the elements that have a baseline. The baseline is
 calculated using the following algorithm:
 max(maxNonBaselineHeight, maxAscent + maxDescent), where the
 maxNonBaselineHeight is the maximum height of all elements
 that do not have a baseline, or are not aligned along the baseline.
 maxAscent is the maximum ascent (baseline) of all elements that
 have a baseline and are aligned along the baseline.
 maxDescent is the maximum descent (preferred height - baseline)
 of all elements that have a baseline and are aligned along the baseline.
 
 A ParallelGroup that aligns its elements along the baseline
 is only useful along the vertical axis. If you create a
 baseline group and use it along the horizontal axis an
 IllegalStateException is thrown when you ask
 GroupLayout for the minimum, preferred or maximum size or
 attempt to layout the components.
 
 Elements that are not aligned to the baseline and smaller than the size
 of the ParallelGroup are positioned in one of three
 ways: centered, anchored to the leading edge, or anchored to the
 trailing edge.
 
Non-baseline ParallelGroup
 ParallelGroups created with an alignment other than
 BASELINE align elements that are smaller than the size
 of the group in one of three ways: centered, anchored to the
 leading edge, or anchored to the trailing edge.
 
 The leading edge is based on the axis and 
 ComponentOrientation.  For the vertical axis the top edge is
 always the leading edge, and the bottom edge is always the
 trailing edge. When the ComponentOrientation is 
 LEFT_TO_RIGHT, the leading edge is the left edge and the
 trailing edge the right edge. A ComponentOrientation of
 RIGHT_TO_LEFT flips the left and right edges. Child
 elements are aligned based on the specified alignment the
 element was added with. If you do not specify an alignment, the
 alignment specified for the ParallelGroup is used.
 
 To align elements along the baseline you createBaselineGroup,
 or createParallelGroup with an alignment of BASELINE.
 If the group was not created with a baseline alignment, and you attempt
 to add an element specifying a baseline alignment, an
 IllegalArgumentException is thrown.
- Since:
- 1.6
- See Also:
- 
Method SummaryModifier and TypeMethodDescriptionaddComponent(Component component) Adds aComponentto thisGroup.addComponent(Component component, int min, int pref, int max) Adds aComponentto thisGroupwith the specified size.addComponent(Component component, GroupLayout.Alignment alignment) Adds aComponentto thisParallelGroupwith the specified alignment.addComponent(Component component, GroupLayout.Alignment alignment, int min, int pref, int max) Adds aComponentto thisParallelGroupwith the specified alignment and size.addGap(int pref) Adds a rigid gap to thisGroup.addGap(int min, int pref, int max) Adds a gap to thisGroupwith the specified size.addGroup(GroupLayout.Alignment alignment, GroupLayout.Group group) Adds aGroupto thisParallelGroupwith the specified alignment.addGroup(GroupLayout.Group group) Adds aGroupto thisGroup.
- 
Method Details- 
addGroupAdds aGroupto thisGroup.- Overrides:
- addGroupin class- GroupLayout.Group
- Parameters:
- group- the- Groupto add
- Returns:
- this Group
 
- 
addComponentAdds aComponentto thisGroup.- Overrides:
- addComponentin class- GroupLayout.Group
- Parameters:
- component- the- Componentto add
- Returns:
- this Group
 
- 
addComponentAdds aComponentto thisGroupwith the specified size.- Overrides:
- addComponentin class- GroupLayout.Group
- Parameters:
- component- the- Componentto add
- min- the minimum size or one of- DEFAULT_SIZEor- PREFERRED_SIZE
- pref- the preferred size or one of- DEFAULT_SIZEor- PREFERRED_SIZE
- max- the maximum size or one of- DEFAULT_SIZEor- PREFERRED_SIZE
- Returns:
- this Group
 
- 
addGapAdds a rigid gap to thisGroup.- Overrides:
- addGapin class- GroupLayout.Group
- Parameters:
- pref- the size of the gap
- Returns:
- this Group
 
- 
addGapAdds a gap to thisGroupwith the specified size.- Overrides:
- addGapin class- GroupLayout.Group
- Parameters:
- min- the minimum size of the gap
- pref- the preferred size of the gap
- max- the maximum size of the gap
- Returns:
- this Group
 
- 
addGroupAdds aGroupto thisParallelGroupwith the specified alignment. If the child is smaller than theGroupit is aligned based on the specified alignment.- Parameters:
- alignment- the alignment
- group- the- Groupto add
- Returns:
- this ParallelGroup
- Throws:
- IllegalArgumentException- if- alignmentis- null
 
- 
addComponentAdds aComponentto thisParallelGroupwith the specified alignment.- Parameters:
- component- the- Componentto add
- alignment- the alignment
- Returns:
- this Group
- Throws:
- IllegalArgumentException- if- alignmentis- null
 
- 
addComponentpublic GroupLayout.ParallelGroup addComponent(Component component, GroupLayout.Alignment alignment, int min, int pref, int max) Adds aComponentto thisParallelGroupwith the specified alignment and size.- Parameters:
- component- the- Componentto add
- alignment- the alignment
- min- the minimum size
- pref- the preferred size
- max- the maximum size
- Returns:
- this Group
- Throws:
- IllegalArgumentException- if- alignmentis- null
 
 
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