public float[] GetCharacterXPositions(Graphics g, string str)
{
#if true
// Make sure our _charWidths list has all the necessary characters.
using (GdiObjectSelector selector = new GdiObjectSelector(g, _font))
{
UpdateCharWidths(selector.HDC, str);
}
float[] xCoords = new float[str.Length];
float curXOffset = 0;
for (int i = 0; i < str.Length; i++)
{
xCoords[i] = curXOffset;
Win32FontSystem.ABCFLOAT abc = _charWidths[(uint)str[i]];
curXOffset += abc.abcfA + abc.abcfB + abc.abcfC;
}
return(xCoords);
#else
// This method gives us spacing between character cells, but it doesn't tell us what the cells are!
Win32FontSystem.GCP_RESULTS results = new Win32FontSystem.GCP_RESULTS();
results.StructSize = Marshal.SizeOf(typeof(Win32FontSystem.GCP_RESULTS));
// Setup the int array for them to write results into.
int[] dx = new int[str.Length];
GCHandle handle = GCHandle.Alloc(dx, GCHandleType.Pinned);
results.Dx = Marshal.UnsafeAddrOfPinnedArrayElement(dx, 0);
using (GdiObjectSelector selector = new GdiObjectSelector(g, _font))
{
// Call GetCharacterPlacement
Win32FontSystem.GetCharacterPlacementW(
selector.HDC,
str,
str.Length,
0, // max extent (ignored)
ref results,
(uint)Win32FontSystem.GCPFlags.GCP_USEKERNING);
}
// Unpin the array.
handle.Free();
// Convert to floats for output.
return(dx.Select(x => (float)x).ToArray());
#endif
}
public float[] GetCharacterXPositions( Graphics g, string str )
{
#if true
// Make sure our _charWidths list has all the necessary characters.
using ( GdiObjectSelector selector = new GdiObjectSelector( g, _font ) )
{
UpdateCharWidths( selector.HDC, str );
}
float[] xCoords = new float[ str.Length ];
float curXOffset = 0;
for ( int i=0; i < str.Length; i++ )
{
xCoords[i] = curXOffset;
Win32FontSystem.ABCFLOAT abc = _charWidths[ (uint)str[i] ];
curXOffset += abc.abcfA + abc.abcfB + abc.abcfC;
}
return xCoords;
#else
// This method gives us spacing between character cells, but it doesn't tell us what the cells are!
Win32FontSystem.GCP_RESULTS results = new Win32FontSystem.GCP_RESULTS();
results.StructSize = Marshal.SizeOf( typeof( Win32FontSystem.GCP_RESULTS ) );
// Setup the int array for them to write results into.
int[] dx = new int[ str.Length ];
GCHandle handle = GCHandle.Alloc( dx, GCHandleType.Pinned );
results.Dx = Marshal.UnsafeAddrOfPinnedArrayElement( dx, 0 );
using ( GdiObjectSelector selector = new GdiObjectSelector( g, _font ) )
{
// Call GetCharacterPlacement
Win32FontSystem.GetCharacterPlacementW(
selector.HDC,
str,
str.Length,
0, // max extent (ignored)
ref results,
(uint)Win32FontSystem.GCPFlags.GCP_USEKERNING );
}
// Unpin the array.
handle.Free();
// Convert to floats for output.
return dx.Select( x => (float)x ).ToArray();
#endif
}
