Ejemplo n.º 1
0
        static CompositeGlyph ReadCompositeGlyph(DataReader reader)
        {
            // we need to keep reading glyphs for as long as
            // our flags tell us that there are more to read
            var subglyphs = new List <Subglyph>();

            CompositeGlyphFlags flags;

            do
            {
                flags = (CompositeGlyphFlags)reader.ReadUInt16BE();

                var subglyph = new Subglyph {
                    Flags = flags
                };
                subglyph.Index = reader.ReadUInt16BE();

                // read in args; they vary in size based on flags
                if ((flags & CompositeGlyphFlags.ArgsAreWords) != 0)
                {
                    subglyph.Arg1 = reader.ReadInt16BE();
                    subglyph.Arg2 = reader.ReadInt16BE();
                }
                else
                {
                    subglyph.Arg1 = reader.ReadSByte();
                    subglyph.Arg2 = reader.ReadSByte();
                }

                // figure out the transform; we can either have no scale, a uniform
                // scale, two independent scales, or a full 2x2 transform matrix
                // transform components are in 2.14 fixed point format
                var transform = Matrix3x2.Identity;
                if ((flags & CompositeGlyphFlags.HaveScale) != 0)
                {
                    var scale = reader.ReadInt16BE() / F2Dot14ToFloat;
                    transform.M11 = scale;
                    transform.M22 = scale;
                }
                else if ((flags & CompositeGlyphFlags.HaveXYScale) != 0)
                {
                    transform.M11 = reader.ReadInt16BE() / F2Dot14ToFloat;
                    transform.M22 = reader.ReadInt16BE() / F2Dot14ToFloat;
                }
                else if ((flags & CompositeGlyphFlags.HaveTransform) != 0)
                {
                    transform.M11 = reader.ReadInt16BE() / F2Dot14ToFloat;
                    transform.M12 = reader.ReadInt16BE() / F2Dot14ToFloat;
                    transform.M21 = reader.ReadInt16BE() / F2Dot14ToFloat;
                    transform.M22 = reader.ReadInt16BE() / F2Dot14ToFloat;
                }

                subglyph.Transform = transform;
                subglyphs.Add(subglyph);
            } while ((flags & CompositeGlyphFlags.MoreComponents) != 0);

            var result = new CompositeGlyph {
                Subglyphs = subglyphs.ToArray()
            };

            // if we have instructions, read them now
            if ((flags & CompositeGlyphFlags.HaveInstructions) != 0)
            {
                var instructionLength = reader.ReadUInt16BE();
                result.Instructions = reader.ReadBytes(instructionLength);
            }

            return(result);
        }
Ejemplo n.º 2
0
        static CompositeGlyph ReadCompositeGlyph(DataReader reader)
        {
            // we need to keep reading glyphs for as long as
            // our flags tell us that there are more to read
            var subglyphs = new List<Subglyph>();

            CompositeGlyphFlags flags;
            do
            {
                flags = (CompositeGlyphFlags)reader.ReadUInt16BE();

                var subglyph = new Subglyph { Flags = flags };
                subglyph.Index = reader.ReadUInt16BE();

                // read in args; they vary in size based on flags
                if ((flags & CompositeGlyphFlags.ArgsAreWords) != 0)
                {
                    subglyph.Arg1 = reader.ReadInt16BE();
                    subglyph.Arg2 = reader.ReadInt16BE();
                }
                else
                {
                    subglyph.Arg1 = reader.ReadSByte();
                    subglyph.Arg2 = reader.ReadSByte();
                }

                // figure out the transform; we can either have no scale, a uniform
                // scale, two independent scales, or a full 2x2 transform matrix
                // transform components are in 2.14 fixed point format
                var transform = Matrix3x2.Identity;
                if ((flags & CompositeGlyphFlags.HaveScale) != 0)
                {
                    var scale = reader.ReadInt16BE() / F2Dot14ToFloat;
                    transform.M11 = scale;
                    transform.M22 = scale;
                }
                else if ((flags & CompositeGlyphFlags.HaveXYScale) != 0)
                {
                    transform.M11 = reader.ReadInt16BE() / F2Dot14ToFloat;
                    transform.M22 = reader.ReadInt16BE() / F2Dot14ToFloat;
                }
                else if ((flags & CompositeGlyphFlags.HaveTransform) != 0)
                {
                    transform.M11 = reader.ReadInt16BE() / F2Dot14ToFloat;
                    transform.M12 = reader.ReadInt16BE() / F2Dot14ToFloat;
                    transform.M21 = reader.ReadInt16BE() / F2Dot14ToFloat;
                    transform.M22 = reader.ReadInt16BE() / F2Dot14ToFloat;
                }

                subglyph.Transform = transform;
                subglyphs.Add(subglyph);

            } while ((flags & CompositeGlyphFlags.MoreComponents) != 0);

            var result = new CompositeGlyph { Subglyphs = subglyphs.ToArray() };

            // if we have instructions, read them now
            if ((flags & CompositeGlyphFlags.HaveInstructions) != 0)
            {
                var instructionLength = reader.ReadUInt16BE();
                result.Instructions = reader.ReadBytes(instructionLength);
            }

            return result;
        }