/// <summary>Reads the glyphs widths.</summary>
/// <remarks>
/// Reads the glyphs widths. The widths are extracted from the table 'hmtx'.
/// The glyphs are normalized to 1000 units (TrueTypeFont.UNITS_NORMALIZATION).
/// Depends on
/// <see cref="HorizontalHeader.numberOfHMetrics"/>
/// and
/// <see cref="HeaderTable.unitsPerEm"/>.
/// </remarks>
protected internal virtual void ReadGlyphWidths()
{
int numberOfHMetrics = hhea.numberOfHMetrics;
int unitsPerEm = head.unitsPerEm;
int[] table_location;
table_location = tables.Get("hmtx");
if (table_location == null)
{
if (fileName != null)
{
throw new iText.IO.IOException(iText.IO.IOException.TableDoesNotExistsIn).SetMessageParams("hmtx", fileName
);
}
else
{
throw new iText.IO.IOException(iText.IO.IOException.TableDoesNotExist).SetMessageParams("hmtx");
}
}
glyphWidthsByIndex = new int[ReadNumGlyphs()];
raf.Seek(table_location[0]);
for (int k = 0; k < numberOfHMetrics; ++k)
{
glyphWidthsByIndex[k] = raf.ReadUnsignedShort() * TrueTypeFont.UNITS_NORMALIZATION / unitsPerEm;
int leftSideBearing = raf.ReadShort() * TrueTypeFont.UNITS_NORMALIZATION / unitsPerEm;
}
// If the font is monospaced, only one entry need be in the array, but that entry is required.
// The last entry applies to all subsequent glyphs.
if (numberOfHMetrics > 0)
{
for (int k = numberOfHMetrics; k < glyphWidthsByIndex.Length; k++)
{
glyphWidthsByIndex[k] = glyphWidthsByIndex[numberOfHMetrics - 1];
}
}
}
/// <summary>Reads the glyphs widths.</summary>
/// <remarks>
/// Reads the glyphs widths. The widths are extracted from the table 'hmtx'.
/// The glyphs are normalized to 1000 units (TrueTypeFont.UNITS_NORMALIZATION).
/// Depends from
/// <c>hhea.numberOfHMetrics</c>
/// property,
/// <seealso>HorizontalHeader</seealso>
/// and
/// <c>head.unitsPerEm</c>
/// property,
/// <seealso>HeaderTable</seealso>
/// .
/// </remarks>
/// <exception cref="System.IO.IOException">the font file could not be read.</exception>
protected internal virtual void ReadGlyphWidths()
{
int numberOfHMetrics = hhea.numberOfHMetrics;
int unitsPerEm = head.unitsPerEm;
int[] table_location;
table_location = tables.Get("hmtx");
if (table_location == null)
{
if (fileName != null)
{
throw new iText.IO.IOException("table.1.does.not.exist.in.2").SetMessageParams("hmtx", fileName);
}
else
{
throw new iText.IO.IOException("table.1.does.not.exist").SetMessageParams("hmtx");
}
}
raf.Seek(table_location[0]);
glyphWidthsByIndex = new int[numberOfHMetrics];
for (int k = 0; k < numberOfHMetrics; ++k)
{
glyphWidthsByIndex[k] = raf.ReadUnsignedShort() * TrueTypeFont.UNITS_NORMALIZATION / unitsPerEm;
int leftSideBearing = raf.ReadShort() * TrueTypeFont.UNITS_NORMALIZATION / unitsPerEm;
}
}
