Interface TextSpanLayout

  • All Known Implementing Classes:
    FlowExtGlyphLayout, FlowGlyphLayout, GlyphLayout

    public interface TextSpanLayout
    Class that performs layout of attributed text strings into glyph sets paintable by TextPainter instances. Similar to java.awt.font.TextLayout in function and purpose. Note that while this utility interface is provided for the convenience of TextPainter implementations, conforming TextPainters are not required to use this class.
    See Also:
    TextLayout, TextPainter
    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      void draw​(java.awt.Graphics2D g2d)
      Paints the specified text layout using the specified Graphics2D and rendering context.
      java.awt.geom.Point2D getAdvance2D()
      Returns the current text position at the completion of glyph layout.
      java.awt.geom.Rectangle2D getBounds2D()
      Returns the rectangular bounds of the completed glyph layout.
      int getCharacterCount​(int startGlyphIndex, int endGlyphIndex)
      Returns the number of chars represented by the glyphs within the specified range.
      double getComputedOrientationAngle​(int index)
      Return the rotation angle applied to the character.
      java.awt.Shape getDecorationOutline​(int decorationType)
      Returns the outline of the specified decorations on the glyphs, transformed by an AffineTransform.
      java.awt.geom.Rectangle2D getGeometricBounds()
      Returns the bounds of the geometry (this is always the bounds of the outline).
      float[] getGlyphAdvances()
      Returns the advance between each glyph in text progression direction.
      int getGlyphCount()
      Returns the number of glyphs in this layout.
      int getGlyphIndex​(int charIndex)
      Returns the glyph index of the glyph that has the specified char index.
      GVTGlyphMetrics getGlyphMetrics​(int glyphIndex)
      Returns the Metrics for a particular glyph.
      GVTGlyphVector getGlyphVector()
      Return the glyph vector asociated to this layout.
      java.awt.Shape getHighlightShape​(int beginCharIndex, int endCharIndex)
      Returns a Shape which encloses the currently selected glyphs as specified by glyph indices begin and end.
      GVTLineMetrics getLineMetrics()
      Returns the Line metrics for this text span.
      java.awt.geom.Point2D getOffset()
      Returns the current text position at the completion beginning of glyph layout, before the application of explicit glyph positioning attributes.
      java.awt.Shape getOutline()
      Returns the outline of the completed glyph layout, transformed by an AffineTransform.
      java.awt.geom.Point2D getTextPathAdvance()  
      boolean hasCharacterIndex​(int index)
      Return true is the character index is represented by glyphs in this layout.
      TextHit hitTestChar​(float x, float y)
      Perform hit testing for coordinate at x, y.
      boolean isAltGlyph()
      Return true if this text run represents an alt glyph.
      boolean isLeftToRight()
      Returns true if the text direction in this layout is from left to right.
      boolean isOnATextPath()
      Returns true if this layout in on a text path.
      boolean isReversed()
      Return true if this text has been reversed.
      boolean isVertical()
      Returns true if the advance direction of this text is vertical.
      void maybeReverse​(boolean mirror)
      Reverse (and optionally mirror) glyphs if not already reversed.
      void setOffset​(java.awt.geom.Point2D offset)
      Sets the text position used for the implicit origin of glyph layout.
      void setScale​(float xScale, float yScale, boolean adjSpacing)
      Sets the scaling factor to use for string.
    • Method Detail

      • draw

        void draw​(java.awt.Graphics2D g2d)
        Paints the specified text layout using the specified Graphics2D and rendering context.
        Parameters:
        g2d - the Graphics2D to use
      • getDecorationOutline

        java.awt.Shape getDecorationOutline​(int decorationType)
        Returns the outline of the specified decorations on the glyphs, transformed by an AffineTransform.
        Parameters:
        decorationType - an integer indicating the type(s) of decorations included in this shape. May be the result of "OR-ing" several values together: e.g. DECORATION_UNDERLINE | DECORATION_STRIKETHROUGH
      • getBounds2D

        java.awt.geom.Rectangle2D getBounds2D()
        Returns the rectangular bounds of the completed glyph layout. This includes stroking information, this does not include deocrations.
      • getGeometricBounds

        java.awt.geom.Rectangle2D getGeometricBounds()
        Returns the bounds of the geometry (this is always the bounds of the outline).
      • getOutline

        java.awt.Shape getOutline()
        Returns the outline of the completed glyph layout, transformed by an AffineTransform.
      • getAdvance2D

        java.awt.geom.Point2D getAdvance2D()
        Returns the current text position at the completion of glyph layout. (This is the position that should be used for positioning adjacent layouts.)
      • getGlyphAdvances

        float[] getGlyphAdvances()
        Returns the advance between each glyph in text progression direction.
      • getGlyphMetrics

        GVTGlyphMetrics getGlyphMetrics​(int glyphIndex)
        Returns the Metrics for a particular glyph.
      • getLineMetrics

        GVTLineMetrics getLineMetrics()
        Returns the Line metrics for this text span.
      • getTextPathAdvance

        java.awt.geom.Point2D getTextPathAdvance()
      • getOffset

        java.awt.geom.Point2D getOffset()
        Returns the current text position at the completion beginning of glyph layout, before the application of explicit glyph positioning attributes.
      • setScale

        void setScale​(float xScale,
                      float yScale,
                      boolean adjSpacing)
        Sets the scaling factor to use for string. if ajdSpacing is true then only the spacing between glyphs will be adjusted otherwise the glyphs and the spaces between them will be adjusted.
        Parameters:
        xScale - Scale factor to apply in X direction.
        yScale - Scale factor to apply in Y direction.
        adjSpacing - True if only spaces should be adjusted.
      • setOffset

        void setOffset​(java.awt.geom.Point2D offset)
        Sets the text position used for the implicit origin of glyph layout. Ignored if multiple explicit glyph positioning attributes are present in ACI (e.g. if the aci has multiple X or Y values).
      • getHighlightShape

        java.awt.Shape getHighlightShape​(int beginCharIndex,
                                         int endCharIndex)
        Returns a Shape which encloses the currently selected glyphs as specified by glyph indices begin and end.
        Parameters:
        beginCharIndex - the index of the first glyph in the contiguous selection.
        endCharIndex - the index of the last glyph in the contiguous selection.
      • hitTestChar

        TextHit hitTestChar​(float x,
                            float y)
        Perform hit testing for coordinate at x, y.
        Parameters:
        x - the x coordinate of the point to be tested.
        y - the y coordinate of the point to be tested.
        Returns:
        a TextHit object encapsulating the character index for successful hits and whether the hit is on the character leading edge.
      • isVertical

        boolean isVertical()
        Returns true if the advance direction of this text is vertical.
      • isOnATextPath

        boolean isOnATextPath()
        Returns true if this layout in on a text path.
      • getGlyphCount

        int getGlyphCount()
        Returns the number of glyphs in this layout.
      • getCharacterCount

        int getCharacterCount​(int startGlyphIndex,
                              int endGlyphIndex)
        Returns the number of chars represented by the glyphs within the specified range.
        Parameters:
        startGlyphIndex - The index of the first glyph in the range.
        endGlyphIndex - The index of the last glyph in the range.
        Returns:
        The number of chars.
      • getGlyphIndex

        int getGlyphIndex​(int charIndex)
        Returns the glyph index of the glyph that has the specified char index.
        Parameters:
        charIndex - The original index of the character in the text node's text string.
        Returns:
        The index of the matching glyph in this layout's glyph vector, or -1 if a matching glyph could not be found.
      • isLeftToRight

        boolean isLeftToRight()
        Returns true if the text direction in this layout is from left to right.
      • hasCharacterIndex

        boolean hasCharacterIndex​(int index)
        Return true is the character index is represented by glyphs in this layout.
        Parameters:
        index - index of the character in the ACI.
        Returns:
        true if the layout represents that character.
      • getGlyphVector

        GVTGlyphVector getGlyphVector()
        Return the glyph vector asociated to this layout.
        Returns:
        glyph vector
      • getComputedOrientationAngle

        double getComputedOrientationAngle​(int index)
        Return the rotation angle applied to the character.
        Parameters:
        index - index of the character in the ACI
        Returns:
        rotation angle
      • isAltGlyph

        boolean isAltGlyph()
        Return true if this text run represents an alt glyph.
      • isReversed

        boolean isReversed()
        Return true if this text has been reversed.
      • maybeReverse

        void maybeReverse​(boolean mirror)
        Reverse (and optionally mirror) glyphs if not already reversed.