예제 #1
0
		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");
		}
예제 #2
0
        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;
            }
        }