/// <summary>
/// read GlyphPlan latest layout output
/// </summary>
private static void ReadOutput(GlyphLayout glyphLayout,
UnscaledGlyphPlanList outputGlyphPlanList)
{
Typeface typeface = glyphLayout.Typeface;
var 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:
outputGlyphPlanList.Append(new UnscaledGlyphPlan(
0,
glyphPos.glyphIndex, glyphPos.advanceW, cx, cy));
break;
case PositionTechnique.OpenFont:
outputGlyphPlanList.Append(new UnscaledGlyphPlan(
0,
glyphPos.glyphIndex,
glyphPos.advanceW,
cx + glyphPos.xoffset,
(short)(cy + glyphPos.yoffset)));
break;
case PositionTechnique.Kerning:
if (i > 0)
{
cx += typeface.GetKernDistance(prev_index, glyphPos.glyphIndex);
}
outputGlyphPlanList.Append(new UnscaledGlyphPlan(
0,
prev_index = glyphPos.glyphIndex,
glyphPos.advanceW,
cx,
cy));
break;
}
cx += glyphPos.advanceW;
}
}
public IUnscaledGlyphPlanList StringToGlyphPlanList(string s)
{
m_layout.Layout(s.ToCharArray(), 0, s.Length);
var l = new UnscaledGlyphPlanList();
foreach (var g in m_layout.GetUnscaledGlyphPlanIter())
{
l.Append(g);
}
return(l);
}
