public DevMetricsData CalcDevMetrics(int Huge_calcHDMX, int Huge_calcLTSH, int Huge_calcVDMX,
ushort numGlyphs,
byte[] phdmxPointSizes, ushort maxHdmxPointSize,
byte uchPixelHeightRangeStart, byte uchPixelHeightRangeEnd,
ushort[] pVDMXxResolution, ushort[] pVDMXyResolution,
ushort cVDMXResolutions, UpdateProgressDelegate pUpdateProgressDelegate)
{
_lib.PropertySet("truetype", "interpreter-version", 35);
if ( Huge_calcHDMX == 0 && Huge_calcLTSH == 0 && Huge_calcVDMX == 0 )
return null;
this.m_DevMetricsData = new DevMetricsData();
if ( Huge_calcHDMX != 0 )
{
List<uint> requestedPixelSize = new List<uint>();
for( ushort i = 0; i <= maxHdmxPointSize ; i++ ) {
if ( phdmxPointSizes[i] == 1 ) {
requestedPixelSize.Add((uint)i);
}
}
this.m_DevMetricsData.hdmxData = new HDMX();
this.m_DevMetricsData.hdmxData.Records = new HDMX_DeviceRecord[requestedPixelSize.Count];
for (int i = 0; i < requestedPixelSize.Count; i++) {
if ( m_UserCancelledTest ) return null;
trySetPixelSizes(0, requestedPixelSize[i]);
this.m_DevMetricsData.hdmxData.Records[i] = new HDMX_DeviceRecord();
this.m_DevMetricsData.hdmxData.Records[i].Widths = new byte[_face.GlyphCount];
for (uint glyphIndex = 0; glyphIndex < _face.GlyphCount; glyphIndex++)
{
_face.LoadGlyph(glyphIndex, LoadFlags.Default|LoadFlags.ComputeMetrics, LoadTarget.Normal);
this.m_DevMetricsData.hdmxData.Records[i].Widths[glyphIndex] = (byte) _face.Glyph.Advance.X.Round();
}
}
}
if ( Huge_calcLTSH != 0 )
{
this.m_DevMetricsData.ltshData = new LTSH();
this.m_DevMetricsData.ltshData.yPels = new byte[numGlyphs];
for (uint i = 0; i < this.m_DevMetricsData.ltshData.yPels.Length; i++) {
this.m_DevMetricsData.ltshData.yPels[i] = 1;
}
int remaining = numGlyphs;
for (uint j = 254; j > 0; j--) {
if ( remaining == 0 )
break;
if ( m_UserCancelledTest ) return null;
trySetPixelSizes(0, j);
for (uint i = 0; i < this.m_DevMetricsData.ltshData.yPels.Length; i++) {
if ( this.m_DevMetricsData.ltshData.yPels[i] > 1 )
continue;
_face.LoadGlyph(i, LoadFlags.Default|LoadFlags.ComputeMetrics, LoadTarget.Normal);
int Advance_X = _face.Glyph.Advance.X.Round() ;
int LinearHorizontalAdvance = _face.Glyph.LinearHorizontalAdvance.Round() ;
if ( Advance_X == LinearHorizontalAdvance )
continue;
int difference = Advance_X - LinearHorizontalAdvance ;
if ( difference < 0 )
difference = - difference;
if ( ( j >= 50 ) && (difference * 50 <= LinearHorizontalAdvance) ) // compat "<="
continue;
// this is off-spec but happens to agree better...
difference = (_face.Glyph.Advance.X.Value << 10) - _face.Glyph.LinearHorizontalAdvance.Value;
if ( difference < 0 )
difference = - difference;
if ( ( j >= 50 ) && (difference * 50 <= _face.Glyph.LinearHorizontalAdvance.Value) ) // compat "<=="
continue;
// off-spec-ness ends.
this.m_DevMetricsData.ltshData.yPels[i] = (byte) ( j + 1 );
remaining--;
}
}
}
if ( Huge_calcVDMX != 0 )
{
this.m_DevMetricsData.vdmxData = new VDMX();
this.m_DevMetricsData.vdmxData.groups = new VDMX_Group[cVDMXResolutions];
for ( int i = 0 ; i < cVDMXResolutions ; i++ )
{
this.m_DevMetricsData.vdmxData.groups[i] = new VDMX_Group();
this.m_DevMetricsData.vdmxData.groups[i].entry = new VDMX_Group_vTable[uchPixelHeightRangeEnd
- uchPixelHeightRangeStart + 1];
for ( ushort j = uchPixelHeightRangeStart ; j <= uchPixelHeightRangeEnd ; j++ )
{
int k = j - uchPixelHeightRangeStart;
this.m_DevMetricsData.vdmxData.groups[i].entry[k] = new VDMX_Group_vTable() ;
this.m_DevMetricsData.vdmxData.groups[i].entry[k].yPelHeight = j ;
uint x_pixelSize = (uint) ( (pVDMXyResolution[i] == 0) ?
0 : (pVDMXxResolution[i] * j + pVDMXyResolution[i]/2 ) / pVDMXyResolution[i] );
if ( m_UserCancelledTest ) return null;
trySetPixelSizes(x_pixelSize, j);
short yMax = 0;
short yMin = 0;
BBox box;
Glyph glyph;
for (uint ig = 0; ig < numGlyphs; ig++) {
_face.LoadGlyph(ig, LoadFlags.Default|LoadFlags.ComputeMetrics, LoadTarget.Normal);
glyph = _face.Glyph.GetGlyph();
box = glyph.GetCBox(GlyphBBoxMode.Truncate);
if (box.Top > yMax) yMax = (short) box.Top;
if (box.Bottom < yMin) yMin = (short) box.Bottom;
glyph.Dispose();
}
this.m_DevMetricsData.vdmxData.groups[i].entry[k].yMax = yMax ;
this.m_DevMetricsData.vdmxData.groups[i].entry[k].yMin = yMin ;
}
}
}
return m_DevMetricsData;
}
public DevMetricsData CalcDevMetrics(int Huge_calcHDMX, int Huge_calcLTSH, int Huge_calcVDMX,
ushort numGlyphs,
byte[] phdmxPointSizes, ushort maxHdmxPointSize,
byte uchPixelHeightRangeStart, byte uchPixelHeightRangeEnd,
ushort[] pVDMXxResolution, ushort[] pVDMXyResolution,
ushort cVDMXResolutions, UpdateProgressDelegate pUpdateProgressDelegate)
{
_lib.PropertySet("truetype", "interpreter-version", 35);
if (Huge_calcHDMX == 0 && Huge_calcLTSH == 0 && Huge_calcVDMX == 0)
{
return(null);
}
this.m_DevMetricsData = new DevMetricsData();
if (Huge_calcHDMX != 0)
{
List <uint> requestedPixelSize = new List <uint>();
for (ushort i = 0; i <= maxHdmxPointSize; i++)
{
if (phdmxPointSizes[i] == 1)
{
requestedPixelSize.Add((uint)i);
}
}
this.m_DevMetricsData.hdmxData = new HDMX();
this.m_DevMetricsData.hdmxData.Records = new HDMX_DeviceRecord[requestedPixelSize.Count];
for (int i = 0; i < requestedPixelSize.Count; i++)
{
if (m_UserCancelledTest)
{
return(null);
}
trySetPixelSizes(0, requestedPixelSize[i]);
this.m_DevMetricsData.hdmxData.Records[i] = new HDMX_DeviceRecord();
this.m_DevMetricsData.hdmxData.Records[i].Widths = new byte[_face.GlyphCount];
for (uint glyphIndex = 0; glyphIndex < _face.GlyphCount; glyphIndex++)
{
_face.LoadGlyph(glyphIndex, LoadFlags.Default | LoadFlags.ComputeMetrics, LoadTarget.Normal);
this.m_DevMetricsData.hdmxData.Records[i].Widths[glyphIndex] = (byte)_face.Glyph.Advance.X.Round();
}
}
}
if (Huge_calcLTSH != 0)
{
this.m_DevMetricsData.ltshData = new LTSH();
this.m_DevMetricsData.ltshData.yPels = new byte[numGlyphs];
for (uint i = 0; i < this.m_DevMetricsData.ltshData.yPels.Length; i++)
{
this.m_DevMetricsData.ltshData.yPels[i] = 1;
}
int remaining = numGlyphs;
for (uint j = 254; j > 0; j--)
{
if (remaining == 0)
{
break;
}
if (m_UserCancelledTest)
{
return(null);
}
trySetPixelSizes(0, j);
for (uint i = 0; i < this.m_DevMetricsData.ltshData.yPels.Length; i++)
{
if (this.m_DevMetricsData.ltshData.yPels[i] > 1)
{
continue;
}
_face.LoadGlyph(i, LoadFlags.Default | LoadFlags.ComputeMetrics, LoadTarget.Normal);
int Advance_X = _face.Glyph.Advance.X.Round();
int LinearHorizontalAdvance = _face.Glyph.LinearHorizontalAdvance.Round();
if (Advance_X == LinearHorizontalAdvance)
{
continue;
}
int difference = Advance_X - LinearHorizontalAdvance;
if (difference < 0)
{
difference = -difference;
}
if ((j >= 50) && (difference * 50 <= LinearHorizontalAdvance)) // compat "<="
{
continue;
}
// this is off-spec but happens to agree better...
difference = (_face.Glyph.Advance.X.Value << 10) - _face.Glyph.LinearHorizontalAdvance.Value;
if (difference < 0)
{
difference = -difference;
}
if ((j >= 50) && (difference * 50 <= _face.Glyph.LinearHorizontalAdvance.Value)) // compat "<=="
{
continue;
}
// off-spec-ness ends.
this.m_DevMetricsData.ltshData.yPels[i] = (byte)(j + 1);
remaining--;
}
}
}
if (Huge_calcVDMX != 0)
{
this.m_DevMetricsData.vdmxData = new VDMX();
this.m_DevMetricsData.vdmxData.groups = new VDMX_Group[cVDMXResolutions];
for (int i = 0; i < cVDMXResolutions; i++)
{
this.m_DevMetricsData.vdmxData.groups[i] = new VDMX_Group();
this.m_DevMetricsData.vdmxData.groups[i].entry = new VDMX_Group_vTable[uchPixelHeightRangeEnd
- uchPixelHeightRangeStart + 1];
for (ushort j = uchPixelHeightRangeStart; j <= uchPixelHeightRangeEnd; j++)
{
int k = j - uchPixelHeightRangeStart;
this.m_DevMetricsData.vdmxData.groups[i].entry[k] = new VDMX_Group_vTable();
this.m_DevMetricsData.vdmxData.groups[i].entry[k].yPelHeight = j;
uint x_pixelSize = (uint)((pVDMXyResolution[i] == 0) ?
0 : (pVDMXxResolution[i] * j + pVDMXyResolution[i] / 2) / pVDMXyResolution[i]);
if (m_UserCancelledTest)
{
return(null);
}
trySetPixelSizes(x_pixelSize, j);
short yMax = 0;
short yMin = 0;
BBox box;
Glyph glyph;
for (uint ig = 0; ig < numGlyphs; ig++)
{
_face.LoadGlyph(ig, LoadFlags.Default | LoadFlags.ComputeMetrics, LoadTarget.Normal);
glyph = _face.Glyph.GetGlyph();
box = glyph.GetCBox(GlyphBBoxMode.Truncate);
if (box.Top > yMax)
{
yMax = (short)box.Top;
}
if (box.Bottom < yMin)
{
yMin = (short)box.Bottom;
}
glyph.Dispose();
}
this.m_DevMetricsData.vdmxData.groups[i].entry[k].yMax = yMax;
this.m_DevMetricsData.vdmxData.groups[i].entry[k].yMin = yMin;
}
}
}
return(m_DevMetricsData);
}
