public int ScriptItemize(string inChars, out SCRIPT_ITEM[] items, out OPENTYPE_TAG[] scriptTags)
{
if (string.IsNullOrEmpty(inChars))
{
throw new ArgumentException("inChars");
}
int length = inChars.Length;
items = new SCRIPT_ITEM[length + 1];
for (int index = 0; index < length + 1; index++)
{
items[index] = default(SCRIPT_ITEM);
}
scriptTags = new OPENTYPE_TAG[length];
for (int index = 0; index < length; index++)
{
scriptTags[index] = new OPENTYPE_TAG('\0', '\0', '\0', '\0');
}
int itemsCount = 0;
int hresult = Usp10.ScriptItemizeOpenType(inChars, length, length + 1, null, 0, items, scriptTags, ref itemsCount);
Marshal.ThrowExceptionForHR(hresult);
return(itemsCount);
}
public int ScriptShape(string inChars, int charPos, int length, SCRIPT_ITEM[] items, OPENTYPE_TAG[] scriptTags, int itemsCount, IntPtr hWnd, string faceName, int fontHeight, out ushort[] logClust, out SCRIPT_CHARPROP[] charProps, out ushort[] glyphs, out SCRIPT_GLYPHPROP[] glyphProps)
{
if (string.IsNullOrEmpty(inChars))
{
throw new ArgumentException("inChars");
}
if (items == null || items.Length <= 0)
{
throw new ArgumentException("items");
}
if (itemsCount >= items.Length)
{
throw new ArgumentException("itemsCount");
}
if (charPos < 0)
{
throw new ArgumentException("charPos");
}
if (charPos >= inChars.Length)
{
throw new ArgumentException("charPos");
}
if (length <= 0)
{
throw new ArgumentException("length");
}
if (charPos + length > inChars.Length)
{
throw new ArgumentOutOfRangeException("length");
}
if (string.IsNullOrEmpty(faceName))
{
throw new ArgumentException("faceName");
}
if (fontHeight <= 0)
{
throw new ArgumentException("fontHeight");
}
int itemIndex;
for (itemIndex = 0; itemIndex < itemsCount - 1; itemIndex++)
{
if (items[itemIndex].iCharPos <= charPos)
{
if (items[itemIndex + 1].iCharPos >= charPos + length)
{
break;
}
}
}
if (itemIndex == itemsCount - 1)
{
if (items[itemIndex].iCharPos > charPos)
{
throw new ArgumentOutOfRangeException("length");
}
}
SCRIPT_ANALYSIS psa = items[itemIndex].a;
string shapeChars = inChars.Substring(charPos, length);
OPENTYPE_TAG tagScript = scriptTags[itemIndex];
OPENTYPE_TAG tagLangSys = new OPENTYPE_TAG('\0', '\0', '\0', '\0');
int[] rangeChars = new int[]
{
length
};
logClust = new ushort[length];
charProps = new SCRIPT_CHARPROP[length];
glyphs = new ushort[length];
glyphProps = new SCRIPT_GLYPHPROP[length];
for (int index = 0; index < length; index++)
{
glyphProps[index] = default(SCRIPT_GLYPHPROP);
logClust[index] = 0;
charProps[index] = default(SCRIPT_CHARPROP);
glyphs[index] = 0;
}
int pcGlyphs = 0;
OPENTYPE_FEATURE_RECORD[] arRecord = new OPENTYPE_FEATURE_RECORD[1];
OPENTYPE_FEATURE_RECORD potfRecord = default(OPENTYPE_FEATURE_RECORD);
arRecord[0] = potfRecord;
potfRecord.tagFeature = new OPENTYPE_TAG('v', 'e', 'r', 't');
potfRecord.lParameter = 1u;
TEXTRANGE_PROPERTIES[] arRangeProperty = new TEXTRANGE_PROPERTIES[1];
TEXTRANGE_PROPERTIES rpRangeProperty = default(TEXTRANGE_PROPERTIES);
arRangeProperty[0] = rpRangeProperty;
rpRangeProperty.cotfRecords = 1;
int cRanges = 1;
IntPtr arRecordPtr = Marshal.AllocHGlobal(Marshal.SizeOf(potfRecord));
Marshal.StructureToPtr(potfRecord, arRecordPtr, false);
IntPtr arRangePtr = Marshal.AllocHGlobal(Marshal.SizeOf(rpRangeProperty));
rpRangeProperty.potfRecords = arRecordPtr;
Marshal.StructureToPtr(rpRangeProperty, arRangePtr, false);
IntPtr hDC = User32.GetDC(hWnd);
IntPtr font = Gdi32.CreateFontIndirect(new LOGFONT
{
lfCharSet = FontCharSet.DEFAULT_CHARSET,
lfHeight = fontHeight,
lfFaceName = faceName
});
IntPtr oldFont = Gdi32.SelectObject(hDC, font);
int hresult = Usp10.ScriptShapeOpenType(hDC, ref this._psc, ref psa, tagScript, tagLangSys, rangeChars, ref arRangePtr, cRanges, shapeChars, length, length, logClust, charProps, glyphs, glyphProps, ref pcGlyphs);
Gdi32.SelectObject(hDC, oldFont);
Gdi32.DeleteObject(font);
User32.ReleaseDC(hWnd, hDC);
Marshal.FreeHGlobal(arRecordPtr);
Marshal.FreeHGlobal(arRangePtr);
Marshal.ThrowExceptionForHR(hresult);
return(pcGlyphs);
}
