fop 0.95

org.apache.fop.layoutmgr.inline
Class TextLayoutManager

java.lang.Object
  extended by org.apache.fop.layoutmgr.AbstractBaseLayoutManager
      extended by org.apache.fop.layoutmgr.AbstractLayoutManager
          extended by org.apache.fop.layoutmgr.inline.LeafNodeLayoutManager
              extended by org.apache.fop.layoutmgr.inline.TextLayoutManager
All Implemented Interfaces:
PercentBaseContext, Constants, InlineLevelLayoutManager, LayoutManager

public class TextLayoutManager
extends LeafNodeLayoutManager

LayoutManager for text (a sequence of characters) which generates one or more inline areas.


Field Summary
 
Fields inherited from class org.apache.fop.layoutmgr.inline.LeafNodeLayoutManager
areaInfo, commonBorderPaddingBackground, curArea, isSomethingChanged
 
Fields inherited from class org.apache.fop.layoutmgr.AbstractLayoutManager
childLMiter, childLMs, curChildLM, fobjIter, parentLM
 
Fields inherited from class org.apache.fop.layoutmgr.AbstractBaseLayoutManager
fobj, generatesBlockArea, generatesReferenceArea
 
Fields inherited from interface org.apache.fop.fo.Constants
COMPOUND_COUNT, COMPOUND_MASK, COMPOUND_SHIFT, CP_BLOCK_PROGRESSION_DIRECTION, CP_CONDITIONALITY, CP_INLINE_PROGRESSION_DIRECTION, CP_LENGTH, CP_MAXIMUM, CP_MINIMUM, CP_OPTIMUM, CP_PRECEDENCE, CP_WITHIN_COLUMN, CP_WITHIN_LINE, CP_WITHIN_PAGE, EN_100, EN_200, EN_300, EN_400, EN_500, EN_600, EN_700, EN_800, EN_900, EN_ABSOLUTE, EN_ABSOLUTE_COLORMETRIC, EN_AFTER, EN_AFTER_EDGE, EN_ALL, EN_ALPHABETIC, EN_ALWAYS, EN_ANY, EN_AUTO, EN_AUTO_EVEN, EN_AUTO_ODD, EN_AVOID, EN_BACKSLANT, EN_BASELINE, EN_BEFORE, EN_BEFORE_EDGE, EN_BIDI_OVERRIDE, EN_BLANK, EN_BLINK, EN_BLOCK, EN_BOLDER, EN_BOTH, EN_BOTTOM, EN_BOUNDED_IN_ONE_DIMENSION, EN_CAPITALIZE, EN_CAPTION, EN_CENTER, EN_CENTRAL, EN_CHARACTER_BY_CHARACTER, EN_COLLAPSE, EN_COLLAPSE_WITH_PRECEDENCE, EN_COLUMN, EN_CONDENSED, EN_CONSIDER_SHIFTS, EN_DASHED, EN_DISCARD, EN_DISREGARD_SHIFTS, EN_DOCUMENT, EN_DOTS, EN_DOTTED, EN_DOUBLE, EN_EMBED, EN_END, EN_END_ON_EVEN, EN_END_ON_ODD, EN_ERROR_IF_OVERFLOW, EN_EVEN, EN_EVEN_PAGE, EN_EXPANDED, EN_EXTRA_CONDENSED, EN_EXTRA_EXPANDED, EN_FALSE, EN_FIC, EN_FIRST, EN_FIXED, EN_FONT_HEIGHT, EN_FORCE, EN_FSWP, EN_GROOVE, EN_HANGING, EN_HIDDEN, EN_HIDE, EN_ICON, EN_IDEOGRAPHIC, EN_IGNORE, EN_IGNORE_IF_AFTER_LINEFEED, EN_IGNORE_IF_BEFORE_LINEFEED, EN_IGNORE_IF_SURROUNDING_LINEFEED, EN_INDEFINITE, EN_INDENT, EN_INHERIT, EN_INSET, EN_INSIDE, EN_INTEGER_PIXELS, EN_ITALIC, EN_JUSTIFY, EN_LARGER, EN_LAST, EN_LEFT, EN_LEWP, EN_LIGHTER, EN_LINE, EN_LINE_HEIGHT, EN_LINE_THROUGH, EN_LOWERCASE, EN_LR_TB, EN_LSWP, EN_LTR, EN_MATHEMATICAL, EN_MAX_HEIGHT, EN_MENU, EN_MESSAGE_BOX, EN_MIDDLE, EN_NARROWER, EN_NO_BLINK, EN_NO_CHANGE, EN_NO_FORCE, EN_NO_LIMIT, EN_NO_LINE_THROUGH, EN_NO_OVERLINE, EN_NO_UNDERLINE, EN_NO_WRAP, EN_NON_UNIFORM, EN_NONE, EN_NOREPEAT, EN_NORMAL, EN_NOT_BLANK, EN_OBLIQUE, EN_ODD, EN_ODD_PAGE, EN_ONLY, EN_OUTSET, EN_OUTSIDE, EN_OVERLINE, EN_PAGE, EN_PAGE_SEQUENCE, EN_PAGINATE, EN_PERCEPTUAL, EN_PRE, EN_PRESERVE, EN_REFERENCE_AREA, EN_RELATIVE, EN_RELATIVE_COLOMETRIC, EN_REPEAT, EN_REPEATX, EN_REPEATY, EN_RESAMPLE_ANY_METHOD, EN_RESET_SIZE, EN_REST, EN_RETAIN, EN_RIDGE, EN_RIGHT, EN_RL_TB, EN_RTL, EN_RULE, EN_SATURATION, EN_SCALE_DOWN_TO_FIT, EN_SCALE_TO_FIT, EN_SCALE_UP_TO_FIT, EN_SCROLL, EN_SEMI_CONDENSED, EN_SEMI_EXPANDED, EN_SEPARATE, EN_SHOW, EN_SMALL_CAPS, EN_SMALL_CAPTION, EN_SMALLER, EN_SOLID, EN_SPACE, EN_START, EN_STATIC, EN_STATUS_BAR, EN_SUB, EN_SUPER, EN_SUPPRESS, EN_TB_RL, EN_TEXT_AFTER_EDGE, EN_TEXT_BEFORE_EDGE, EN_TEXT_BOTTOM, EN_TEXT_TOP, EN_TOP, EN_TRADITIONAL, EN_TREAT_AS_SPACE, EN_TREAT_AS_ZERO_WIDTH_SPACE, EN_TRUE, EN_ULTRA_CONDENSED, EN_ULTRA_EXPANDED, EN_UNBOUNDED, EN_UNDERLINE, EN_UNIFORM, EN_UPPERCASE, EN_USE_FONT_METRICS, EN_USE_SCRIPT, EN_USECONTENT, EN_VISIBLE, EN_WIDER, EN_WRAP, EN_X_DISTRIBUTE, EN_X_FILL, ENUM_COUNT, FO_BASIC_LINK, FO_BIDI_OVERRIDE, FO_BLOCK, FO_BLOCK_CONTAINER, FO_BOOKMARK, FO_BOOKMARK_TITLE, FO_BOOKMARK_TREE, FO_CHARACTER, FO_COLOR_PROFILE, FO_CONDITIONAL_PAGE_MASTER_REFERENCE, FO_DECLARATIONS, FO_EXTERNAL_GRAPHIC, FO_FLOAT, FO_FLOW, FO_FOOTNOTE, FO_FOOTNOTE_BODY, FO_INITIAL_PROPERTY_SET, FO_INLINE, FO_INLINE_CONTAINER, FO_INSTREAM_FOREIGN_OBJECT, FO_LAYOUT_MASTER_SET, FO_LEADER, FO_LIST_BLOCK, FO_LIST_ITEM, FO_LIST_ITEM_BODY, FO_LIST_ITEM_LABEL, FO_MARKER, FO_MULTI_CASE, FO_MULTI_PROPERTIES, FO_MULTI_PROPERTY_SET, FO_MULTI_SWITCH, FO_MULTI_TOGGLE, FO_PAGE_NUMBER, FO_PAGE_NUMBER_CITATION, FO_PAGE_NUMBER_CITATION_LAST, FO_PAGE_SEQUENCE, FO_PAGE_SEQUENCE_MASTER, FO_PAGE_SEQUENCE_WRAPPER, FO_REGION_AFTER, FO_REGION_BEFORE, FO_REGION_BODY, FO_REGION_END, FO_REGION_START, FO_REPEATABLE_PAGE_MASTER_ALTERNATIVES, FO_REPEATABLE_PAGE_MASTER_REFERENCE, FO_RETRIEVE_MARKER, FO_ROOT, FO_SIMPLE_PAGE_MASTER, FO_SINGLE_PAGE_MASTER_REFERENCE, FO_STATIC_CONTENT, FO_TABLE, FO_TABLE_AND_CAPTION, FO_TABLE_BODY, FO_TABLE_CAPTION, FO_TABLE_CELL, FO_TABLE_COLUMN, FO_TABLE_FOOTER, FO_TABLE_HEADER, FO_TABLE_ROW, FO_TITLE, FO_UNKNOWN_NODE, FO_WRAPPER, FRM_OBJ_COUNT, NOT_SET, PR_ABSOLUTE_POSITION, PR_ACTIVE_STATE, PR_ALIGNMENT_ADJUST, PR_ALIGNMENT_BASELINE, PR_AUTO_RESTORE, PR_AZIMUTH, PR_BACKGROUND, PR_BACKGROUND_ATTACHMENT, PR_BACKGROUND_COLOR, PR_BACKGROUND_IMAGE, PR_BACKGROUND_POSITION, PR_BACKGROUND_POSITION_HORIZONTAL, PR_BACKGROUND_POSITION_VERTICAL, PR_BACKGROUND_REPEAT, PR_BASELINE_SHIFT, PR_BLANK_OR_NOT_BLANK, PR_BLOCK_PROGRESSION_DIMENSION, PR_BORDER, PR_BORDER_AFTER_COLOR, PR_BORDER_AFTER_PRECEDENCE, PR_BORDER_AFTER_STYLE, PR_BORDER_AFTER_WIDTH, PR_BORDER_BEFORE_COLOR, PR_BORDER_BEFORE_PRECEDENCE, PR_BORDER_BEFORE_STYLE, PR_BORDER_BEFORE_WIDTH, PR_BORDER_BOTTOM, PR_BORDER_BOTTOM_COLOR, PR_BORDER_BOTTOM_STYLE, PR_BORDER_BOTTOM_WIDTH, PR_BORDER_COLLAPSE, PR_BORDER_COLOR, PR_BORDER_END_COLOR, PR_BORDER_END_PRECEDENCE, PR_BORDER_END_STYLE, PR_BORDER_END_WIDTH, PR_BORDER_LEFT, PR_BORDER_LEFT_COLOR, PR_BORDER_LEFT_STYLE, PR_BORDER_LEFT_WIDTH, PR_BORDER_RIGHT, PR_BORDER_RIGHT_COLOR, PR_BORDER_RIGHT_STYLE, PR_BORDER_RIGHT_WIDTH, PR_BORDER_SEPARATION, PR_BORDER_SPACING, PR_BORDER_START_COLOR, PR_BORDER_START_PRECEDENCE, PR_BORDER_START_STYLE, PR_BORDER_START_WIDTH, PR_BORDER_STYLE, PR_BORDER_TOP, PR_BORDER_TOP_COLOR, PR_BORDER_TOP_STYLE, PR_BORDER_TOP_WIDTH, PR_BORDER_WIDTH, PR_BOTTOM, PR_BREAK_AFTER, PR_BREAK_BEFORE, PR_CAPTION_SIDE, PR_CASE_NAME, PR_CASE_TITLE, PR_CHARACTER, PR_CLEAR, PR_CLIP, PR_COLOR, PR_COLOR_PROFILE_NAME, PR_COLUMN_COUNT, PR_COLUMN_GAP, PR_COLUMN_NUMBER, PR_COLUMN_WIDTH, PR_CONTENT_HEIGHT, PR_CONTENT_TYPE, PR_CONTENT_WIDTH, PR_COUNTRY, PR_CUE, PR_CUE_AFTER, PR_CUE_BEFORE, PR_DESTINATION_PLACEMENT_OFFSET, PR_DIRECTION, PR_DISPLAY_ALIGN, PR_DOMINANT_BASELINE, PR_ELEVATION, PR_EMPTY_CELLS, PR_END_INDENT, PR_ENDS_ROW, PR_EXTENT, PR_EXTERNAL_DESTINATION, PR_FLOAT, PR_FLOW_NAME, PR_FONT, PR_FONT_FAMILY, PR_FONT_SELECTION_STRATEGY, PR_FONT_SIZE, PR_FONT_SIZE_ADJUST, PR_FONT_STRETCH, PR_FONT_STYLE, PR_FONT_VARIANT, PR_FONT_WEIGHT, PR_FORCE_PAGE_COUNT, PR_FORMAT, PR_GLYPH_ORIENTATION_HORIZONTAL, PR_GLYPH_ORIENTATION_VERTICAL, PR_GROUPING_SEPARATOR, PR_GROUPING_SIZE, PR_HEIGHT, PR_HYPHENATE, PR_HYPHENATION_CHARACTER, PR_HYPHENATION_KEEP, PR_HYPHENATION_LADDER_COUNT, PR_HYPHENATION_PUSH_CHARACTER_COUNT, PR_HYPHENATION_REMAIN_CHARACTER_COUNT, PR_ID, PR_INDEX_CLASS, PR_INDEX_KEY, PR_INDICATE_DESTINATION, PR_INITIAL_PAGE_NUMBER, PR_INLINE_PROGRESSION_DIMENSION, PR_INTERNAL_DESTINATION, PR_INTRUSION_DISPLACE, PR_KEEP_TOGETHER, PR_KEEP_WITH_NEXT, PR_KEEP_WITH_PREVIOUS, PR_LANGUAGE, PR_LAST_LINE_END_INDENT, PR_LEADER_ALIGNMENT, PR_LEADER_LENGTH, PR_LEADER_PATTERN, PR_LEADER_PATTERN_WIDTH, PR_LEFT, PR_LETTER_SPACING, PR_LETTER_VALUE, PR_LINE_HEIGHT, PR_LINE_HEIGHT_SHIFT_ADJUSTMENT, PR_LINE_STACKING_STRATEGY, PR_LINEFEED_TREATMENT, PR_MARGIN, PR_MARGIN_BOTTOM, PR_MARGIN_LEFT, PR_MARGIN_RIGHT, PR_MARGIN_TOP, PR_MARKER_CLASS_NAME, PR_MASTER_NAME, PR_MASTER_REFERENCE, PR_MAX_HEIGHT, PR_MAX_WIDTH, PR_MAXIMUM_REPEATS, PR_MEDIA_USAGE, PR_MIN_HEIGHT, PR_MIN_WIDTH, PR_NUMBER_COLUMNS_REPEATED, PR_NUMBER_COLUMNS_SPANNED, PR_NUMBER_ROWS_SPANNED, PR_ODD_OR_EVEN, PR_ORPHANS, PR_OVERFLOW, PR_PADDING, PR_PADDING_AFTER, PR_PADDING_BEFORE, PR_PADDING_BOTTOM, PR_PADDING_END, PR_PADDING_LEFT, PR_PADDING_RIGHT, PR_PADDING_START, PR_PADDING_TOP, PR_PAGE_BREAK_AFTER, PR_PAGE_BREAK_BEFORE, PR_PAGE_BREAK_INSIDE, PR_PAGE_HEIGHT, PR_PAGE_POSITION, PR_PAGE_WIDTH, PR_PAUSE, PR_PAUSE_AFTER, PR_PAUSE_BEFORE, PR_PITCH, PR_PITCH_RANGE, PR_PLAY_DURING, PR_POSITION, PR_PRECEDENCE, PR_PROVISIONAL_DISTANCE_BETWEEN_STARTS, PR_PROVISIONAL_LABEL_SEPARATION, PR_REF_ID, PR_REFERENCE_ORIENTATION, PR_REGION_NAME, PR_RELATIVE_ALIGN, PR_RELATIVE_POSITION, PR_RENDERING_INTENT, PR_RETRIEVE_BOUNDARY, PR_RETRIEVE_CLASS_NAME, PR_RETRIEVE_POSITION, PR_RICHNESS, PR_RIGHT, PR_ROLE, PR_RULE_STYLE, PR_RULE_THICKNESS, PR_SCALING, PR_SCALING_METHOD, PR_SCORE_SPACES, PR_SCRIPT, PR_SHOW_DESTINATION, PR_SIZE, PR_SOURCE_DOCUMENT, PR_SPACE_AFTER, PR_SPACE_BEFORE, PR_SPACE_END, PR_SPACE_START, PR_SPAN, PR_SPEAK, PR_SPEAK_HEADER, PR_SPEAK_NUMERAL, PR_SPEAK_PUNCTUATION, PR_SPEECH_RATE, PR_SRC, PR_START_INDENT, PR_STARTING_STATE, PR_STARTS_ROW, PR_STRESS, PR_SUPPRESS_AT_LINE_BREAK, PR_SWITCH_TO, PR_TABLE_LAYOUT, PR_TABLE_OMIT_FOOTER_AT_BREAK, PR_TABLE_OMIT_HEADER_AT_BREAK, PR_TARGET_PRESENTATION_CONTEXT, PR_TARGET_PROCESSING_CONTEXT, PR_TARGET_STYLESHEET, PR_TEXT_ALIGN, PR_TEXT_ALIGN_LAST, PR_TEXT_ALTITUDE, PR_TEXT_DECORATION, PR_TEXT_DEPTH, PR_TEXT_INDENT, PR_TEXT_SHADOW, PR_TEXT_TRANSFORM, PR_TOP, PR_TREAT_AS_WORD_SPACE, PR_UNICODE_BIDI, PR_VERTICAL_ALIGN, PR_VISIBILITY, PR_VOICE_FAMILY, PR_VOLUME, PR_WHITE_SPACE, PR_WHITE_SPACE_COLLAPSE, PR_WHITE_SPACE_TREATMENT, PR_WIDOWS, PR_WIDTH, PR_WORD_SPACING, PR_WRAP_OPTION, PR_WRITING_MODE, PR_X_BLOCK_PROGRESSION_UNIT, PR_X_ORPHAN_CONTENT_LIMIT, PR_X_WIDOW_CONTENT_LIMIT, PR_XML_LANG, PR_Z_INDEX, PROPERTY_COUNT, PROPERTY_MASK
 
Constructor Summary
TextLayoutManager(FOText node)
          Create a Text layout manager.
 
Method Summary
 java.util.List addALetterSpaceTo(java.util.List oldList)
          Tell the LM to modify its data, adding a letter space to the word fragment represented by the given elements, and returning the corrected elements
 void addAreas(PositionIterator posIter, LayoutContext context)
          Generate and add areas to parent area.
 boolean applyChanges(java.util.List oldList)
          Tell the LM to apply the changes due to hyphenation
protected  TextArea createTextArea(MinOptMax width, int adjust, LayoutContext context, int spaceDiff, int firstIndex, int lastIndex, boolean isLastArea)
          Create an inline word area.
 java.util.LinkedList getChangedKnuthElements(java.util.List oldList, int alignment)
          Get a sequence of KnuthElements representing the content of the node assigned to the LM, after changes have been applied In the context of line breaking, this method is called after hyphenation has been performed, in order to receive the sequence of elements representing the text together with all possibile hyphenation points.
 java.util.LinkedList getNextKnuthElements(LayoutContext context, int alignment)
          Get a sequence of KnuthElements representing the content of the node assigned to the LM
 void getWordChars(java.lang.StringBuffer sbChars, Position pos)
          Get the word chars corresponding to the given position
 void hyphenate(Position pos, HyphContext hc)
          Tell the LM to hyphenate a word
 void initialize()
          initialize the layout manager.
 void removeWordSpace(java.util.List oldList)
          remove the AreaInfo object represented by the given elements, so that it won't generate any element when getChangedKnuthElements will be called
 
Methods inherited from class org.apache.fop.layoutmgr.inline.LeafNodeLayoutManager
addChildArea, addId, addKnuthElementsForBorderPaddingEnd, addKnuthElementsForBorderPaddingStart, get, getAllocationIPD, getEffectiveArea, getParentArea, makeAlignmentContext, offsetArea, resolved, setCommonBorderPaddingBackground, setCurrentArea, widthAdjustArea
 
Methods inherited from class org.apache.fop.layoutmgr.AbstractLayoutManager
addChildLM, addChildLMs, addMarkersToPage, createChildLMs, createNextChildLMs, getChildLM, getChildLMs, getCurrentPage, getCurrentPV, getParent, getPSLM, hasNextChildLM, isFinished, isFirst, isLast, notifyPos, setFinished, setParent, toString, transferForeignAttributes
 
Methods inherited from class org.apache.fop.layoutmgr.AbstractBaseLayoutManager
getAncestorBlockAreaBPD, getAncestorBlockAreaIPD, getBaseLength, getContentAreaBPD, getContentAreaIPD, getFObj, getGeneratesBlockArea, getGeneratesLineArea, getGeneratesReferenceArea, getParentAreaBPD, getParentAreaIPD, getReferenceAreaBPD, getReferenceAreaIPD, setGeneratesBlockArea, setGeneratesReferenceArea
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface org.apache.fop.layoutmgr.LayoutManager
addChildLM, addChildLMs, createNextChildLMs, getChildLMs, getContentAreaBPD, getContentAreaIPD, getFObj, getGeneratesBlockArea, getGeneratesLineArea, getGeneratesReferenceArea, getParent, getPSLM, isFinished, notifyPos, setFinished, setParent
 
Methods inherited from interface org.apache.fop.datatypes.PercentBaseContext
getBaseLength
 

Constructor Detail

TextLayoutManager

public TextLayoutManager(FOText node)
Create a Text layout manager.

Parameters:
node - The FOText object to be rendered
Method Detail

initialize

public void initialize()
initialize the layout manager. Allows each layout manager to calculate often used values.

Specified by:
initialize in interface LayoutManager
Overrides:
initialize in class AbstractLayoutManager

addAreas

public void addAreas(PositionIterator posIter,
                     LayoutContext context)
Generate and add areas to parent area. This can either generate an area for each TextArea and each space, or an area containing all text with a parameter controlling the size of the word space. The latter is most efficient for PDF generation. Set size of each area.

Specified by:
addAreas in interface LayoutManager
Overrides:
addAreas in class LeafNodeLayoutManager
Parameters:
posIter - Iterator over Position information returned by this LayoutManager.
context - LayoutContext for adjustments

createTextArea

protected TextArea createTextArea(MinOptMax width,
                                  int adjust,
                                  LayoutContext context,
                                  int spaceDiff,
                                  int firstIndex,
                                  int lastIndex,
                                  boolean isLastArea)
Create an inline word area. This creates a TextArea and sets up the various attributes.

Parameters:
width - the MinOptMax width of the content
adjust - the total ipd adjustment with respect to the optimal width
context - the layout context
spaceDiff - unused
firstIndex - the index of the first AreaInfo used for the TextArea
lastIndex - the index of the last AreaInfo used for the TextArea
isLastArea - is this TextArea the last in a line?
Returns:
the new text area

getNextKnuthElements

public java.util.LinkedList getNextKnuthElements(LayoutContext context,
                                                 int alignment)
Get a sequence of KnuthElements representing the content of the node assigned to the LM

Specified by:
getNextKnuthElements in interface LayoutManager
Overrides:
getNextKnuthElements in class LeafNodeLayoutManager
Parameters:
context - the LayoutContext used to store layout information
alignment - the desired text alignement
Returns:
the list of KnuthElements

addALetterSpaceTo

public java.util.List addALetterSpaceTo(java.util.List oldList)
Tell the LM to modify its data, adding a letter space to the word fragment represented by the given elements, and returning the corrected elements

Specified by:
addALetterSpaceTo in interface InlineLevelLayoutManager
Overrides:
addALetterSpaceTo in class LeafNodeLayoutManager
Parameters:
oldList - the elements which must be given one more letter space
Returns:
the new elements replacing the old ones

removeWordSpace

public void removeWordSpace(java.util.List oldList)
remove the AreaInfo object represented by the given elements, so that it won't generate any element when getChangedKnuthElements will be called

Specified by:
removeWordSpace in interface InlineLevelLayoutManager
Overrides:
removeWordSpace in class LeafNodeLayoutManager
Parameters:
oldList - the elements representing the word space

hyphenate

public void hyphenate(Position pos,
                      HyphContext hc)
Tell the LM to hyphenate a word

Specified by:
hyphenate in interface InlineLevelLayoutManager
Overrides:
hyphenate in class LeafNodeLayoutManager
Parameters:
pos - the Position referring to the word
hc - the HyphContext storing hyphenation information

applyChanges

public boolean applyChanges(java.util.List oldList)
Tell the LM to apply the changes due to hyphenation

Specified by:
applyChanges in interface InlineLevelLayoutManager
Overrides:
applyChanges in class LeafNodeLayoutManager
Parameters:
oldList - the list of the old elements the changes refer to
Returns:
true if the LM had to change its data, false otherwise

getChangedKnuthElements

public java.util.LinkedList getChangedKnuthElements(java.util.List oldList,
                                                    int alignment)
Get a sequence of KnuthElements representing the content of the node assigned to the LM, after changes have been applied In the context of line breaking, this method is called after hyphenation has been performed, in order to receive the sequence of elements representing the text together with all possibile hyphenation points. For example, if the text "representation" originates a single box element when getNextKnuthElements() is called, it will be now split in syllables (rep-re-sen-ta-tion) each one originating a box and divided by additional elements allowing a line break. In the context of page breaking, this method is called only if the pages need to be "vertically justified" modifying (also) the quantity of lines created by the paragraphs, and after a first page breaking has been performed. According to the result of the first page breaking, each paragraph now knows how many lines it must create (among the existing layout possibilities) and has to create a sequence of elements representing this layout; in particular, each box, representing a line, will contain a LineBreakPositions that will be used in the addAreas() phase. LMs having children look at the old list of elements in order to know which ones they must get the new elements from, as break conditions of preserved linefeeds can divide children into smaller groups (page sequences or paragraphs). LMs having no children can simply return the old elements if they have nothing to change. Inline LMs need to know the text alignment because it affects the elements representing feasible breaks between syllables.

Specified by:
getChangedKnuthElements in interface LayoutManager
Overrides:
getChangedKnuthElements in class LeafNodeLayoutManager
Parameters:
oldList - the elements to replace
alignment - the desired text alignment
Returns:
the updated list of KnuthElements

getWordChars

public void getWordChars(java.lang.StringBuffer sbChars,
                         Position pos)
Get the word chars corresponding to the given position

Specified by:
getWordChars in interface InlineLevelLayoutManager
Overrides:
getWordChars in class LeafNodeLayoutManager
Parameters:
sbChars - the StringBuffer used to append word chars
pos - the Position referring to the needed word chars

fop 0.95

Copyright 1999-2008 The Apache Software Foundation. All Rights Reserved.