| public GlyphPositions ( ) : SharpFont.HarfBuzz.GlyphPosition[] | ||
| return | SharpFont.HarfBuzz.GlyphPosition[] | |
static void Main(string[] args)
{
Console.WriteLine("Version string: " + HB.VersionString);
Version v = HB.Version;
Console.WriteLine("Version: " + v.Major + "." + v.Minor + "." + v.Build);
Console.WriteLine("VersionCheck: " + HB.VersionAtLeast(v));
var lib = new Library();
var face = new SharpFont.Face(lib, @"C:\Windows\Fonts\tahoma.ttf");
face.SetCharSize(0, 50, 72, 72);
var font = HarfBuzz.Font.FromFTFace(face);
var buf = new HarfBuzz.Buffer();
buf.Direction = Direction.RightToLeft;
buf.Script = Script.Arabic;
buf.AddText("متن");
font.Shape(buf);
var glyphInfos = buf.GlyphInfo();
var glyphPositions = buf.GlyphPositions();
int height = (face.MaxAdvanceHeight - face.Descender) >> 6;
int width = 0;
for (int i = 0; i < glyphInfos.Length; ++i)
{
width += glyphPositions[i].xAdvance >> 6;
}
Bitmap bmp = new Bitmap(width, height);
Graphics g = Graphics.FromImage(bmp);
g.Clear(Color.Gray);
int penX = 0, penY = face.MaxAdvanceHeight >> 6;
//draw the string
for (int i = 0; i < glyphInfos.Length; ++i)
{
face.LoadGlyph(glyphInfos[i].codepoint, LoadFlags.Default, LoadTarget.Normal);
face.Glyph.RenderGlyph(RenderMode.Normal);
Bitmap cBmp = face.Glyph.Bitmap.ToGdipBitmap(Color.Firebrick);
g.DrawImageUnscaled(cBmp,
penX + (glyphPositions[i].xOffset >> 6) + face.Glyph.BitmapLeft,
penY - (glyphPositions[i].yOffset >> 6) - face.Glyph.BitmapTop);
penX += glyphPositions[i].xAdvance >> 6;
penY -= glyphPositions[i].yAdvance >> 6;
}
g.Dispose();
bmp.Save("output.bmp");
}
public static void Text(string str, float startX, float startY, uint c, Direction dir = Direction.LeftToRight,
Script script = Script.Latin)
{
var buf = new SharpFont.HarfBuzz.Buffer
{
Direction = dir,
Script = script
};
buf.AddText(str);
fixedsysFont.Shape(buf);
var glyphInfos = buf.GlyphInfo();
var glyphPositions = buf.GlyphPositions();
int penX = 0, penY = 0;
//draw the string
for (int i = 0; i < glyphInfos.Length; ++i)
{
fixedsysFace.LoadGlyph(glyphInfos[i].codepoint, LoadFlags.Monochrome, LoadTarget.Mono);
fixedsysFace.Glyph.RenderGlyph(RenderMode.Mono);
var bmap = fixedsysFace.Glyph.Bitmap;
// Console.WriteLine("{2} bmap {0} {1}", i, bmap.Width, str);
// https://dbader.org/blog/monochrome-font-rendering-with-freetype-and-python
for (int y = 0; y < bmap.Rows; y++)
{
for (int byteIndex = 0; byteIndex < bmap.Pitch; byteIndex++)
{
var bval = bmap.BufferData[y * bmap.Pitch + byteIndex];
var numDone = byteIndex * 8;
for (int bitIndex = 0; bitIndex < Math.Min(8, bmap.Width - numDone); bitIndex++)
{
var bit = bval & (1 << (7 - bitIndex));
if (bit != 0)
{
var xxx = penX + bitIndex + numDone + (glyphPositions[i].xOffset >> 6) +
fixedsysFace.Glyph.BitmapLeft;
var yyy = penY - y - (glyphPositions[i].yOffset >> 6) + fixedsysFace.Glyph.BitmapTop;
Set(startX + xxx, startY - yyy, c);
}
}
}
}
penX += glyphPositions[i].xAdvance >> 6;
penY -= glyphPositions[i].yAdvance >> 6;
}
}