org.apache.batik.bridge
Class StrokingTextPainter

java.lang.Object
  org.apache.batik.bridge.BasicTextPainter
      org.apache.batik.bridge.StrokingTextPainter

All Implemented Interfaces:

TextPainter

Direct Known Subclasses:

FlowExtTextPainter, FlowTextPainter

public class StrokingTextPainter
extends BasicTextPainter

More sophisticated implementation of TextPainter which renders the attributed character iterator of a TextNode. StrokingTextPainter includes support for stroke, fill, opacity, text-decoration, and other attributes.

See Also:

TextPainter, GVTAttributedCharacterIterator

PAINT_INFO

public static final AttributedCharacterIterator.Attribute PAINT_INFO

FLOW_REGIONS

public static final AttributedCharacterIterator.Attribute FLOW_REGIONS

FLOW_PARAGRAPH

public static final AttributedCharacterIterator.Attribute FLOW_PARAGRAPH

TEXT_COMPOUND_ID

public static final AttributedCharacterIterator.Attribute TEXT_COMPOUND_ID

GVT_FONT

public static final AttributedCharacterIterator.Attribute GVT_FONT

GVT_FONTS

public static final AttributedCharacterIterator.Attribute GVT_FONTS

BIDI_LEVEL

public static final AttributedCharacterIterator.Attribute BIDI_LEVEL

XPOS

public static final AttributedCharacterIterator.Attribute XPOS

YPOS

public static final AttributedCharacterIterator.Attribute YPOS

TEXTPATH

public static final AttributedCharacterIterator.Attribute TEXTPATH

WRITING_MODE

public static final AttributedCharacterIterator.Attribute WRITING_MODE

WRITING_MODE_TTB

public static final Integer WRITING_MODE_TTB

WRITING_MODE_RTL

public static final Integer WRITING_MODE_RTL

ANCHOR_TYPE

public static final AttributedCharacterIterator.Attribute ANCHOR_TYPE

ADJUST_SPACING

public static final Integer ADJUST_SPACING

ADJUST_ALL

public static final Integer ADJUST_ALL

ALT_GLYPH_HANDLER

public static final GVTAttributedCharacterIterator.TextAttribute ALT_GLYPH_HANDLER

singleton

protected static TextPainter singleton

A unique instance of this class.

StrokingTextPainter

public StrokingTextPainter()

getInstance

public static TextPainter getInstance()

Returns a unique instance of this class.

paint

public void paint(TextNode node,
                  Graphics2D g2d)

Paints the specified text node using the specified Graphics2D.

Parameters:

node - the text node to paint

g2d - the Graphics2D to use

printAttrs

protected void printAttrs(AttributedCharacterIterator aci)

getTextRuns

public List getTextRuns(TextNode node,
                        AttributedCharacterIterator aci)

computeTextRuns

public List computeTextRuns(TextNode node,
                            AttributedCharacterIterator aci,
                            AttributedCharacterIterator[] chunkACIs)

computeTextRuns

protected List computeTextRuns(TextNode node,
                               AttributedCharacterIterator aci,
                               AttributedCharacterIterator[] chunkACIs,
                               int[][] chunkCharMaps)

reorderTextRuns

protected List reorderTextRuns(StrokingTextPainter.TextChunk chunk,
                               List runs)

Reorder text runs as required by bidi algorithm.

Parameters:

runs - - unordered runs

Returns:

reordered runs

getTextChunkACIs

protected AttributedCharacterIterator[] getTextChunkACIs(AttributedCharacterIterator aci)

Returns an array of ACIs, one for each text chunk within the given text node.

createModifiedACIForFontMatching

protected AttributedCharacterIterator createModifiedACIForFontMatching(AttributedCharacterIterator aci)

Returns a new AttributedCharacterIterator that contains resolved GVTFont attributes. This is then used when creating the text runs so that the text can be split on changes of font as well as tspans and trefs.

Parameters:

aci - The aci to be modified should already be split into text chunks.

Returns:

The new modified aci.

getFontFamilyResolver

protected FontFamilyResolver getFontFamilyResolver()

getTextRunBoundaryAttributes

protected Set getTextRunBoundaryAttributes()

getTextChunk

protected StrokingTextPainter.TextChunk getTextChunk(TextNode node,
                                                     AttributedCharacterIterator aci,
                                                     int[] charMap,
                                                     List textRuns,
                                                     StrokingTextPainter.TextChunk prevChunk)

adjustChunkOffsets

protected Point2D adjustChunkOffsets(Point2D location,
                                     List textRuns,
                                     StrokingTextPainter.TextChunk chunk)

Adjusts the position of the text runs within the specified text chunk to account for any text anchor properties.

paintDecorations

protected void paintDecorations(List textRuns,
                                Graphics2D g2d,
                                int decorationType)

Paints decorations of the specified type.

paintTextRuns

protected void paintTextRuns(List textRuns,
                             Graphics2D g2d)

Paints the text in each text run. Decorations are not painted here.

getOutline

public Shape getOutline(TextNode node)

Get a Shape in userspace coords which defines the textnode glyph outlines.

Parameters:

node - the TextNode to measure

getBounds2D

public Rectangle2D getBounds2D(TextNode node)

Get a Rectangle2D in userspace coords which encloses the textnode glyphs including stroke etc.

Parameters:

node - the TextNode to measure

getDecorationOutline

protected Shape getDecorationOutline(List textRuns,
                                     int decorationType)

Returns the outline of the specified decoration type.

Parameters:

textRuns - The list of text runs to get the decoration outline for.

decorationType - Indicates the type of decoration required. eg. underline, overline or strikethrough.

Returns:

The decoration outline or null if the text is not decorated.

getDecorationStrokeOutline

protected Shape getDecorationStrokeOutline(List textRuns,
                                           int decorationType)

Returns the stroked outline of the specified decoration type. If the decoration has no stroke it will return the fill outline

Parameters:

textRuns - The list of text runs to get the decoration outline for.

decorationType - Indicates the type of decoration required. eg. underline, overline or strikethrough.

Returns:

The decoration outline or null if the text is not decorated.

getMark

public Mark getMark(TextNode node,
                    int index,
                    boolean leadingEdge)

Description copied from interface: TextPainter

Returns a mark for the char at index in node's AttributedCharacterIterator. Leading edge indicates if the mark should be considered immediately 'before' glyph or after

hitTest

protected Mark hitTest(double x,
                       double y,
                       TextNode node)

Description copied from class: BasicTextPainter

Returns the mark for the specified parameters.

Specified by:

hitTest in class BasicTextPainter

selectFirst

public Mark selectFirst(TextNode node)

Selects the first glyph in the text node.

selectLast

public Mark selectLast(TextNode node)

Selects the last glyph in the text node.

getSelected

public int[] getSelected(Mark startMark,
                         Mark finishMark)

Returns an array of ints representing begin/end index pairs into an AttributedCharacterIterator which represents the text selection delineated by two Mark instances. Note: The Mark instances passed must have been instantiated by an instance of this enclosing TextPainter implementation.

getHighlightShape

public Shape getHighlightShape(Mark beginMark,
                               Mark endMark)

Return a Shape, in the coordinate system of the text layout, which encloses the text selection delineated by two Mark instances. Note: The Mark instances passed must have been instantiated by an instance of this enclosing TextPainter implementation.