public void SetGlyphInfo(BDF_Glyph_Header GlyphHeader)
{
OffsetX = GlyphHeader.BitmapOffsetX;
OffsetY -= GlyphHeader.BitmapOffsetY + GlyphHeader.BitmapHeight;
BitmapWidth = GlyphHeader.BitmapWidth;
BitmapHeight = GlyphHeader.BitmapHeight;
}
private BDF_Glyph_Header ReadGlyphHeader(ref GlyphDecodeInfo DecodeInfo)
{
BDF_Glyph_Header GlyphHeader = new BDF_Glyph_Header();
GlyphHeader.BitmapWidth = DecodeBitFieldUnsigned(DecodeInfo, FontHeader.GlyphWidthSizeInBits);
GlyphHeader.BitmapHeight = DecodeBitFieldUnsigned(DecodeInfo, FontHeader.GlyphHeightSizeInBits);
GlyphHeader.BitmapOffsetX = DecodeBitFieldSigned(DecodeInfo, FontHeader.GlyphOffetXSizeInBits);
GlyphHeader.BitmapOffsetY = DecodeBitFieldSigned(DecodeInfo, FontHeader.GlyphOffetYSizeInBits);
GlyphHeader.BitmapPitch = DecodeBitFieldSigned(DecodeInfo, FontHeader.GlyphPitchSizeInBits);
return(GlyphHeader);
}
private void DrawGlyph(GlyphDecodeInfo DecodeInfo, BDF_Glyph_Header GlyphHeader)
{
while (!DecodeInfo.IsBitmapReady())
{
Int32 Pixels0 = DecodeBitFieldUnsigned(DecodeInfo, (byte)FontHeader.m0);
Int32 Pixels1 = DecodeBitFieldUnsigned(DecodeInfo, (byte)FontHeader.m1);
do
{
WritePixels(ref DecodeInfo, Pixels0, false);
WritePixels(ref DecodeInfo, Pixels1, true);
} while (DecodeBitFieldUnsigned(DecodeInfo, 1) == 1);
}
}
public Int32 GetPixelLength(String Text)
{
Int32 PixelWidth = 0;
for (int i = 0; i < Text.Length; i++)
{
Int32 GlyphPos = GetCharPos(Text[i]);
GlyphDecodeInfo DecodeInfo = new GlyphDecodeInfo(FontHeader, GlyphPos);
BDF_Glyph_Header GlyphHeader = ReadGlyphHeader(ref DecodeInfo);
PixelWidth += GlyphHeader.BitmapPitch;
}
return(PixelWidth);
}
private void EraseRemainingBackground(BDF_Glyph_Header GlyphHeader)
{
Int32 StartBitmapY = FontHeader.BoundingBoxHeight + FontHeader.BoundingBoxOffsetY - GlyphHeader.BitmapOffsetY - GlyphHeader.BitmapHeight;
Int32 EndBitmapY = StartBitmapY + GlyphHeader.BitmapHeight;
for (int Y = 0; Y < FontHeader.BoundingBoxHeight; Y++)
{
for (int X = 0; X < FontHeader.BoundingBoxWidth; X++)
{
if (Y >= StartBitmapY && Y < EndBitmapY)
{
if (X == GlyphHeader.BitmapOffsetX)
{
X += GlyphHeader.BitmapWidth;
}
}
PutFontPixel(X, Y, false);
}
}
}
private void DrawGlyph(Int32 GlyphPos, bool RightAlignment)
{
GlyphDecodeInfo DecodeInfo = new GlyphDecodeInfo(FontHeader, GlyphPos);
BDF_Glyph_Header GlyphHeader = ReadGlyphHeader(ref DecodeInfo);
DecodeInfo.SetGlyphInfo(GlyphHeader);
if (RightAlignment)
{
CursorX -= GlyphHeader.BitmapPitch;
}
DrawGlyph(DecodeInfo, GlyphHeader);
if (!ModeTransparent)
{
EraseRemainingBackground(GlyphHeader);
}
if (!RightAlignment)
{
CursorX += GlyphHeader.BitmapPitch;
}
}
