/// <summary>
/// read latest layout output
/// </summary>
/// <param name="glyphLayout"></param>
/// <param name="readDel"></param>
public static void ReadOutput(this GlyphLayout glyphLayout, GlyphReadOutputDelegate readDel)
{
Typeface typeface = glyphLayout.Typeface;
List <GlyphPos> glyphPositions = glyphLayout._glyphPositions;
//3.read back
int finalGlyphCount = glyphPositions.Count;
int cx = 0;
short cy = 0;
PositionTechnique posTech = glyphLayout.PositionTechnique;
ushort prev_index = 0;
for (int i = 0; i < finalGlyphCount; ++i)
{
GlyphPos glyphPos = glyphPositions[i];
//----------------------------------
switch (posTech)
{
default: throw new NotSupportedException();
case PositionTechnique.None:
readDel(i, new GlyphPlan(glyphPos.glyphIndex, cx, cy, glyphPos.advWidth));
break;
case PositionTechnique.OpenFont:
readDel(i, new GlyphPlan(
glyphPos.glyphIndex,
cx + glyphPos.xoffset,
(short)(cy + glyphPos.yoffset),
glyphPos.advWidth));
break;
case PositionTechnique.Kerning:
if (i > 0)
{
cx += typeface.GetKernDistance(prev_index, glyphPos.glyphIndex);
}
readDel(i, new GlyphPlan(
prev_index = glyphPos.glyphIndex,
cx,
cy,
glyphPos.advWidth));
break;
}
cx += glyphPos.advWidth;
}
}
/// <summary>
/// read latest layout output
/// </summary>
/// <param name="glyphLayout"></param>
/// <param name="readDel"></param>
public static void ReadOutput(this GlyphLayout glyphLayout, GlyphReadOutputDelegate readDel)
{
throw new NotSupportedException();
//Typeface typeface = glyphLayout.Typeface;
//List<GlyphPos> glyphPositions = glyphLayout._glyphPositions;
////3.read back
//int finalGlyphCount = glyphPositions.Count;
//int cx = 0;
//short cy = 0;
//PositionTechnique posTech = glyphLayout.PositionTechnique;
//ushort prev_index = 0;
//for (int i = 0; i < finalGlyphCount; ++i)
//{
// GlyphPos glyphPos = glyphPositions[i];
// //----------------------------------
// switch (posTech)
// {
// default: throw new NotSupportedException();
// case PositionTechnique.None:
// readDel(i, new GlyphPlan(glyphPos.glyphIndex, cx, cy, glyphPos.AdvWidth));
// break;
// case PositionTechnique.OpenFont:
// readDel(i, new GlyphPlan(
// glyphPos.glyphIndex,
// cx + glyphPos.xoffset,
// (short)(cy + glyphPos.yoffset),
// glyphPos.AdvWidth));
// break;
// case PositionTechnique.Kerning:
// if (i > 0)
// {
// cx += typeface.GetKernDistance(prev_index, glyphPos.glyphIndex);
// }
// readDel(i, new GlyphPlan(
// prev_index = glyphPos.glyphIndex,
// cx,
// cy,
// glyphPos.AdvWidth));
// break;
// }
// cx += glyphPos.AdvWidth;
//}
}
public static void Layout(this GlyphLayout glyphLayout, char[] str, int startAt, int len, GlyphReadOutputDelegate readDel)
{
glyphLayout.Layout(str, startAt, len);
glyphLayout.ReadOutput(readDel);
}
