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## Package org.apache.fop.layoutmgr

FOP's layout engine.

See:
Description

Interface Summary
BlockLevelEventProducer | Event producer interface for block-level layout managers.
BlockLevelLayoutManager | The interface for LayoutManagers which generate block areas
BreakOpportunity | Defines methods to evaluate break opportunities at a particular location in the tree of layout managers.
ConditionalElementListener | This interface is used to notify layout managers about the situation around spaces, borders and padding just before the addArea() method is called when a part is being painted.
ElementListObserver.Observer | Implement this interface to receive notifications on element lists.
LayoutManager | The interface for all LayoutManagers.
LayoutManagerMaker | The interface for all LayoutManager makers
TopLevelLayoutManager | This interface is implemented by top-level layout managers such as the ones for fo:page-sequence and fox:external-document.

Class Summary
AbstractBaseLayoutManager | The base class for nearly all LayoutManagers.
AbstractBreaker | Abstract base class for breakers (page breakers, static region handlers etc.).
AbstractBreaker.PageBreakPosition | A page break position.
AbstractLayoutManager | The base class for most LayoutManagers.
AbstractPageSequenceLayoutManager | Abstract base class for a page sequence layout manager.
Adjustment |
AreaAdditionUtil | Utility class which provides common code for the addAreas stage.
BalancingColumnBreakingAlgorithm | This is a the breaking algorithm that is responsible for balancing columns in multi-column layout.
BlockContainerLayoutManager | LayoutManager for a block-container FO.
BlockKnuthSequence | Represents a list of block level Knuth elements.
BlockLayoutManager | LayoutManager for a block FO.
BlockLevelEventProducer.Provider | Provider class for the event producer.
BlockStackingLayoutManager | Base LayoutManager class for all areas which stack their child areas in the block-progression direction, such as Flow, Block, ListBlock.
BlockStackingLayoutManager.MappingPosition | A mapping position.
BorderElement | This represents an unresolved border element.
BorderOrPaddingElement | This class represents an unresolved border or padding element.
BreakElement | This class represents an unresolved break possibility.
BreakingAlgorithm | The set of nodes is sorted into lines indexed into activeLines.
BreakOpportunityHelper | Helper implementations of the `BreakOpportunity` methods.
ElementListObserver | This class is used to observe Knuth element lists generated within the layout managers.
ElementListUtils | Utilities for Knuth element lists.
ExternalDocumentLayoutManager | LayoutManager for an external-document extension element.
FlowLayoutManager | LayoutManager for an fo:flow object.
FootnoteBodyLayoutManager | Layout manager for footnote bodies.
InlineKnuthSequence | Represents a list of inline Knuth elements.
Keep | Object representing a keep constraint, corresponding to the XSL-FO keep properties.
KnuthBlockBox | Knuth box used to represent a line in block-progression-dimension (i.e.
KnuthBox | An instance of this class represents an unbreakable piece of content with fixed width: for example an image, a syllable (but only if letter spacing is constant), ...
KnuthElement | This is the super class for KnuthBox, KnuthGlue and KnuthPenalty.
KnuthGlue | An instance of this class represents a piece of content with adjustable width: for example a space between words of justified text.
KnuthPenalty | An instance of this class represents information about a feasible breaking point; it does not represent any piece of content.
KnuthPossPosIter | A dedicated `PositionIterator` that is backed by an iterator over a list of `KnuthElement`s.
KnuthSequence | Represents a list of `Knuth elements`.
LayoutContext | This class is used to pass information to the getNextKnuthElements() method.
LayoutException.LayoutExceptionFactory | Exception factory for `LayoutException`.
LayoutManagerMapping | The default LayoutManager maker class
LayoutManagerMapping.BasicLinkLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.BidiOverrideLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.BlockContainerLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.BlockLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.CharacterLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.ExternalGraphicLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.FootnodeLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.FOTextLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.InlineContainerLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.InlineLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.InstreamForeignObjectLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.LeaderLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.ListBlockLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.ListItemLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.Maker | a layout manager maker base class
LayoutManagerMapping.PageNumberCitationLastLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.PageNumberCitationLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.PageNumberLayoutManagerMaker | a layout manager maker
LayoutManagerMapping.TableLayoutManagerMaker | a layout manager maker
LeafPosition | A leaf position.
ListElement | This class is the base class for all kinds of elements that are added to element lists.
LMiter | An iterator for layout managers.
NonLeafPosition | A non-leaf position.
PaddingElement | This represents an unresolved padding element.
Page | This object is used by the layout engine to represent a page.
PageBreaker | Handles the breaking of pages in an fo:flow
PageProvider | This class delivers Page instances.
PageSequenceLayoutManager | LayoutManager for a PageSequence.
Position | A position.
PositionIterator | An iterator over `Position` instances, that is wrapped around another 'parent' `Iterator`.
RelSide | Enum class for relative sides.
SpaceElement | This class represents an unresolved space element.
SpaceResolver | This class resolves spaces and conditional borders and paddings by replacing the UnresolvedListElements descendants by the right combination of KnuthElements on an element list.
SpaceResolver.SpaceHandlingBreakPosition | Position class for break possibilities.
SpaceResolver.SpaceHandlingPosition | Position class for no-break situations.
SpaceSpecifier | Accumulate a sequence of space-specifiers (XSL space type) on areas with a stacking constraint.
StaticContentLayoutManager | LayoutManager for an fo:flow object.
TraitSetter | This is a helper class used for setting common traits on areas.
UnresolvedListElement | This class represents an unresolved list element.
UnresolvedListElementWithLength | This class represents an unresolved list element element with a (conditional) length.

Exception Summary
LayoutException | Exception thrown by FOP if an unrecoverable layout error occurs.

## Package org.apache.fop.layoutmgr Description

FOP's layout engine. Layout managers and supporting classes.

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