How to use

getStrikethroughOffset

method

in

java.awt.font.LineMetrics

/**
 * Helper method that will draw the underline of a curved label using the context of the cursor.
 */
private void drawCurvedStrikethrough(
    LineInfo line,
    LineStringCursor cursor,
    double startOrdinate,
    boolean drawingHalo,
    LineMetrics metrics) {
  final float lineOffset = metrics.getStrikethroughOffset();
  final float lineThickness = metrics.getStrikethroughThickness();
  drawCurvedLine(line, cursor, startOrdinate, drawingHalo, lineOffset, lineThickness);
}

/**
 * Draws a line under the text with the same color of the text and with the same width using the
 * provided thickness and offset.
 */
private void drawStraightLabelStrikethroughIfNeeded(
    java.awt.Shape outline, LineMetrics metrics, boolean drawingHalo) {
  // let's see if text strikethrough is enabled for this label or we have something to draw
  if (!labelItem.isTextStrikethrough()) {
    // text strikethrough not enabled or nothing to draw
    return;
  }
  // get needed metrics values
  float thickness = metrics.getStrikethroughThickness();
  float offset = metrics.getStrikethroughOffset();
  drawStraightLabelLine(outline, drawingHalo, thickness, offset);
}

/**
 * Vertical centering is not trivial, because visually we want centering on characters such as
 * a,m,e, and not centering on d,g whose center is affected by the full ascent or the full
 * descent. This method tries to computes the y anchor taking into account those.
 */
public double getLinePlacementYAnchor() {
  TextStyle2D textStyle = getLabel().getTextStyle();
  LineMetrics lm =
      textStyle
          .getFont()
          .getLineMetrics(textStyle.getLabel(), graphics.getFontRenderContext());
  // gracefully handle font size = 0
  if (lm.getHeight() > 0) {
    return (Math.abs(lm.getStrikethroughOffset()) + lm.getDescent() + lm.getLeading())
        / lm.getHeight();
  } else {
    return 0;
  }
}

int stPos = Math.round(lm.getStrikethroughOffset()) +
  g.getFont().getBaselineFor(chars[pos]) + 1;

public float getStrikethroughOffset() {
  return _lineMetrics.getStrikethroughOffset();
}

public float getStrikethroughOffset() {
  return _lineMetrics.getStrikethroughOffset();
}

public float getStrikethroughOffset() {
  return _lineMetrics.getStrikethroughOffset();
}

public float getStrikethroughOffset() {
  float max = -Float.MAX_VALUE;
  
  for (LineMetrics met : _lineMetrics) {
    max = Math.max(max, met.getStrikethroughOffset());
  }
  
  return max;
}

public int getStrikeoutPosition(String family, int style, int size) {
  setFont(family, style, size);
  return -Math.round(lineMetrics.getStrikethroughOffset());
}

private synchronized void initStrikethrough(Graphics g) {
  LineMetrics lm = font.getLineMetrics("aAyY", ((Graphics2D) g).getFontRenderContext());
  strikethroughOffset = lm.getStrikethroughOffset();
  strikethroughThickness = lm.getStrikethroughThickness();
  inited |= ST_INITED;
}

private synchronized void initStrikethrough(Graphics g) {
  LineMetrics lm = font.getLineMetrics("aAyY", ((Graphics2D)g).getFontRenderContext()); // NOI18N
  strikethroughOffset = lm.getStrikethroughOffset();
  strikethroughThickness = lm.getStrikethroughThickness();
  inited |= ST_INITED;
}

/**
 * Vertical centering is not trivial, because visually we want centering on
 * characters such as a,m,e, and not centering on d,g whose center is
 * affected by the full ascent or the full descent. This method tries to
 * computes the y anchor taking into account those.
 */
public double getLinePlacementYAnchor() {
  TextStyle2D textStyle = getLabel().getTextStyle();
  LineMetrics lm = textStyle.getFont().getLineMetrics(textStyle.getLabel(),
      graphics.getFontRenderContext());
  
  // gracefully handle font size = 0
  if(lm.getHeight() > 0)
    return (Math.abs(lm.getStrikethroughOffset()) + lm.getDescent() + lm.getLeading())
        / lm.getHeight();
  else 
    return 0;
}

LineMetrics lm = getEffectiveFont().getLineMetrics("", fontRenderContext);
float ascent = lm.getAscent();
int strikethroughX = Math.round(lm.getAscent() + lm.getStrikethroughOffset());
int underlineX = Math.round(lm.getAscent() + lm.getUnderlineOffset());
boolean underline = getEffectiveUnderline();

LineMetrics lm = getEffectiveFont().getLineMetrics("", fontRenderContext);
float ascent = lm.getAscent();
int strikethroughX = Math.round(lm.getAscent() + lm.getStrikethroughOffset());
int underlineX = Math.round(lm.getAscent() + lm.getUnderlineOffset());
boolean underline = getEffectiveUnderline();

/**
 * Constructs a GVTLineMetrics object based on the specified line metrics.
 *
 * @param lineMetrics The lineMetrics object that this metrics object will
 * be based upon.
 */
public GVTLineMetrics(LineMetrics lineMetrics) {
  this.ascent = lineMetrics.getAscent();
  this.baselineIndex = lineMetrics.getBaselineIndex();
  this.baselineOffsets = lineMetrics.getBaselineOffsets();
  this.descent = lineMetrics.getDescent();
  this.height = lineMetrics.getHeight();
  this.leading = lineMetrics.getLeading();
  this.numChars = lineMetrics.getNumChars();
  this.strikethroughOffset = lineMetrics.getStrikethroughOffset();
  this.strikethroughThickness = lineMetrics.getStrikethroughThickness();
  this.underlineOffset = lineMetrics.getUnderlineOffset();
  this.underlineThickness = lineMetrics.getUnderlineThickness();
  this.overlineOffset = -this.ascent;
  this.overlineThickness = this.underlineThickness;
}

/**
 * Constructs a GVTLineMetrics object based on the specified line metrics.
 *
 * @param lineMetrics The lineMetrics object that this metrics object will
 * be based upon.
 */
public GVTLineMetrics(LineMetrics lineMetrics) {
  this.ascent = lineMetrics.getAscent();
  this.baselineIndex = lineMetrics.getBaselineIndex();
  this.baselineOffsets = lineMetrics.getBaselineOffsets();
  this.descent = lineMetrics.getDescent();
  this.height = lineMetrics.getHeight();
  this.leading = lineMetrics.getLeading();
  this.numChars = lineMetrics.getNumChars();
  this.strikethroughOffset = lineMetrics.getStrikethroughOffset();
  this.strikethroughThickness = lineMetrics.getStrikethroughThickness();
  this.underlineOffset = lineMetrics.getUnderlineOffset();
  this.underlineThickness = lineMetrics.getUnderlineThickness();
  this.overlineOffset = -this.ascent;
  this.overlineThickness = this.underlineThickness;
}

/**
 * Constructs a GVTLineMetrics object based on the specified line metrics.
 *
 * @param lineMetrics The lineMetrics object that this metrics object will
 * be based upon.
 */
public GVTLineMetrics(LineMetrics lineMetrics) {
  this.ascent = lineMetrics.getAscent();
  this.baselineIndex = lineMetrics.getBaselineIndex();
  this.baselineOffsets = lineMetrics.getBaselineOffsets();
  this.descent = lineMetrics.getDescent();
  this.height = lineMetrics.getHeight();
  this.leading = lineMetrics.getLeading();
  this.numChars = lineMetrics.getNumChars();
  this.strikethroughOffset = lineMetrics.getStrikethroughOffset();
  this.strikethroughThickness = lineMetrics.getStrikethroughThickness();
  this.underlineOffset = lineMetrics.getUnderlineOffset();
  this.underlineThickness = lineMetrics.getUnderlineThickness();
  this.overlineOffset = -this.ascent;
  this.overlineThickness = this.underlineThickness;
}

/**
 * Constructs a GVTLineMetrics object based on the specified line metrics
 * with a scale factor applied.
 *
 * @param lineMetrics The lineMetrics object that this metrics object will
 * be based upon.
 * @param scaleFactor The scale factor to apply to all metrics.
 */
public GVTLineMetrics(LineMetrics lineMetrics, float scaleFactor) {
  this.ascent = lineMetrics.getAscent() * scaleFactor;
  this.baselineIndex = lineMetrics.getBaselineIndex();
  this.baselineOffsets = lineMetrics.getBaselineOffsets();
  for (int i=0; i<baselineOffsets.length; i++) {
    this.baselineOffsets[i] *= scaleFactor;
  }
  this.descent = lineMetrics.getDescent() * scaleFactor;
  this.height = lineMetrics.getHeight() * scaleFactor;
  this.leading = lineMetrics.getLeading();
  this.numChars = lineMetrics.getNumChars();
  this.strikethroughOffset = 
    lineMetrics.getStrikethroughOffset() * scaleFactor;
  this.strikethroughThickness = 
    lineMetrics.getStrikethroughThickness() * scaleFactor;
  this.underlineOffset = lineMetrics.getUnderlineOffset() * scaleFactor;
  this.underlineThickness = 
    lineMetrics.getUnderlineThickness() * scaleFactor;
  this.overlineOffset = -this.ascent;
  this.overlineThickness = this.underlineThickness;
}

/**
 * Constructs a GVTLineMetrics object based on the specified line metrics
 * with a scale factor applied.
 *
 * @param lineMetrics The lineMetrics object that this metrics object will
 * be based upon.
 * @param scaleFactor The scale factor to apply to all metrics.
 */
public GVTLineMetrics(LineMetrics lineMetrics, float scaleFactor) {
  this.ascent = lineMetrics.getAscent() * scaleFactor;
  this.baselineIndex = lineMetrics.getBaselineIndex();
  this.baselineOffsets = lineMetrics.getBaselineOffsets();
  for (int i=0; i<baselineOffsets.length; i++) {
    this.baselineOffsets[i] *= scaleFactor;
  }
  this.descent = lineMetrics.getDescent() * scaleFactor;
  this.height = lineMetrics.getHeight() * scaleFactor;
  this.leading = lineMetrics.getLeading();
  this.numChars = lineMetrics.getNumChars();
  this.strikethroughOffset = 
    lineMetrics.getStrikethroughOffset() * scaleFactor;
  this.strikethroughThickness = 
    lineMetrics.getStrikethroughThickness() * scaleFactor;
  this.underlineOffset = lineMetrics.getUnderlineOffset() * scaleFactor;
  this.underlineThickness = 
    lineMetrics.getUnderlineThickness() * scaleFactor;
  this.overlineOffset = -this.ascent;
  this.overlineThickness = this.underlineThickness;
}

/**
 * Constructs a GVTLineMetrics object based on the specified line metrics
 * with a scale factor applied.
 *
 * @param lineMetrics The lineMetrics object that this metrics object will
 * be based upon.
 * @param scaleFactor The scale factor to apply to all metrics.
 */
public GVTLineMetrics(LineMetrics lineMetrics, float scaleFactor) {
  this.ascent = lineMetrics.getAscent() * scaleFactor;
  this.baselineIndex = lineMetrics.getBaselineIndex();
  this.baselineOffsets = lineMetrics.getBaselineOffsets();
  for (int i=0; i<baselineOffsets.length; i++) {
    this.baselineOffsets[i] *= scaleFactor;
  }
  this.descent = lineMetrics.getDescent() * scaleFactor;
  this.height = lineMetrics.getHeight() * scaleFactor;
  this.leading = lineMetrics.getLeading();
  this.numChars = lineMetrics.getNumChars();
  this.strikethroughOffset = 
    lineMetrics.getStrikethroughOffset() * scaleFactor;
  this.strikethroughThickness = 
    lineMetrics.getStrikethroughThickness() * scaleFactor;
  this.underlineOffset = lineMetrics.getUnderlineOffset() * scaleFactor;
  this.underlineThickness = 
    lineMetrics.getUnderlineThickness() * scaleFactor;
  this.overlineOffset = -this.ascent;
  this.overlineThickness = this.underlineThickness;
}