private void ReadFontAlignZones()
{
SWFFont font = fontDict[this.sdtr.ReadUI16()];
if (font == null)
{
throw new SWFModellerException(SWFModellerError.SWFParsing, "Bad font ID in pixel alignment data", swf.Context);
}
font.ThicknessHint = (SWFFont.Thickness) this.sdtr.ReadUBits(2);
/*(void)*/ this.sdtr.ReadUBits(6); /* Reserved */
char[] codes = font.CodePoints;
for (int i = 0; i < codes.Length; i++)
{
PixelAlignment alignment = new PixelAlignment();
alignment.ZoneInfo = new PixelAlignment.ZoneData[this.sdtr.ReadUI8()];
for (int j = 0; j < alignment.ZoneInfo.Length; j++)
{
alignment.ZoneInfo[j] = new PixelAlignment.ZoneData()
{
AlignmentCoord = this.sdtr.ReadUI16(),
Range = this.sdtr.ReadUI16()
};
}
/*(void)*/ this.sdtr.ReadUBits(6); /* Reserved */
alignment.HasY = this.sdtr.ReadBit();
alignment.HasX = this.sdtr.ReadBit();
font.AddPixelAlignment(codes[i], alignment);
}
}
private void ReadFontName()
{
SWFFont font = fontDict[this.sdtr.ReadUI16()];
if (font == null)
{
throw new SWFModellerException(SWFModellerError.SWFParsing, "Bad font ID in font name data", swf.Context);
}
font.FullName = this.sdtr.ReadString();
font.Copyright = this.sdtr.ReadString();
}
private void WriteFont(SWFFont font, int fid)
{
WriteBuffer fontTag = this.OpenTag(Tag.DefineFont3, font.Name + "; id=" + fid);
char[] codes = font.CodePoints;
/* Tag.DefineFont3 */
{
fontTag.WriteUI16((uint)fid);
fontTag.WriteBit(font.HasLayout);
fontTag.WriteBit(false); /* ISSUE 50: ShiftJIS support */
fontTag.WriteBit(font.IsSmall);
fontTag.WriteBit(false); /* ISSUE 51: ANSI support, though I think this might never be false. */
fontTag.WriteBit(true); /* ISSUE 52: We always write wide offsets. This is because we're too lazy to measure our table. */
fontTag.WriteBit(true); /* Spec says must be true. */
fontTag.WriteBit(font.IsItalic);
fontTag.WriteBit(font.IsBold);
fontTag.WriteUI8((uint)font.LanguageCode);
fontTag.WriteString(font.Name, true);
fontTag.WriteUI16((uint)font.GlyphCount);
byte[][] shapeData = new byte[font.GlyphCount][];
int totalShapeBytes = 0;
for (int i = 0; i < font.GlyphCount; i++)
{
Tag format;
shapeData[i] = ShapeWriter.ShapeToBytes(font.GetGlyphShape(codes[i]), out format);
if (format != Tag.DefineFont3)
{
throw new SWFModellerException(SWFModellerError.Internal, "Can't write non-font shapes as glyphs");
}
totalShapeBytes += shapeData[i].Length;
}
int startOffset = font.GlyphCount * 4 + 4; /* 4 bytes per offset (wide offsets) + 4 for the code table offset */
int nextOffset = startOffset;
foreach (byte[] shapeBytes in shapeData)
{
fontTag.WriteUI32((uint)nextOffset);
nextOffset += shapeBytes.Length;
}
fontTag.WriteUI32((uint)(startOffset + totalShapeBytes));
foreach (byte[] shapeBytes in shapeData)
{
fontTag.WriteBytes(shapeBytes);
}
foreach (char code in codes)
{
fontTag.WriteUI16((uint)code);
}
if (font.HasLayout)
{
fontTag.WriteSI16(font.Ascent.Value);
fontTag.WriteSI16(font.Descent.Value);
fontTag.WriteSI16(font.Leading.Value);
Rect[] bounds = new Rect[font.GlyphCount];
int boundsPos = 0;
foreach (char c in codes)
{
GlyphLayout gl = font.GetLayout(c);
fontTag.WriteSI16(gl.Advance);
bounds[boundsPos++] = gl.Bounds;
}
foreach (Rect bound in bounds)
{
fontTag.WriteRect(bound);
fontTag.Align8();
}
fontTag.WriteUI16((uint)font.KerningTable.Length);
foreach (KerningPair kern in font.KerningTable)
{
fontTag.WriteUI16(kern.LeftChar);
fontTag.WriteUI16(kern.RightChar);
fontTag.WriteSI16(kern.Adjustment);
}
}
}
this.CloseTag();
if (font.HasPixelAlignment)
{
WriteBuffer zonesTag = this.OpenTag(Tag.DefineFontAlignZones, font.Name + "; id=" + fid);
zonesTag.WriteUI16((uint)fid);
if (font.ThicknessHint == null)
{
throw new SWFModellerException(SWFModellerError.Internal, "Can't have pixel aligmnent without a font thickness hint.");
}
zonesTag.WriteUBits((uint)font.ThicknessHint, 2);
zonesTag.WriteUBits(0, 6); /* Reserved */
foreach (char c in codes)
{
PixelAlignment pa = font.GetPixelAligment(c);
if (pa.ZoneInfo.Length != 2)
{
throw new SWFModellerException(SWFModellerError.Internal, "Pixel aligment should always have 2 zones.");
}
zonesTag.WriteUI8((uint)pa.ZoneInfo.Length);
foreach (PixelAlignment.ZoneData zi in pa.ZoneInfo)
{
/* These int values are just unparsed 16-bit floats. */
zonesTag.WriteUI16((uint)zi.AlignmentCoord);
zonesTag.WriteUI16((uint)zi.Range);
}
zonesTag.WriteUBits(0, 6); /* Reserved */
zonesTag.WriteBit(pa.HasY);
zonesTag.WriteBit(pa.HasX);
}
this.CloseTag();
}
if (font.HasExtraNameInfo)
{
WriteBuffer nameTag = this.OpenTag(Tag.DefineFontName, font.FullName + "; id=" + fid);
nameTag.WriteUI16((uint)fid);
nameTag.WriteString(font.FullName);
nameTag.WriteString(font.Copyright);
this.CloseTag();
}
}
private void ReadFont(Tag fontType)
{
int fontID = this.sdtr.ReadUI16();
/* Bunch of flags */
bool hasLayout = this.sdtr.ReadBit();
bool isShiftJIS = this.sdtr.ReadBit();
bool isSmallText = this.sdtr.ReadBit();
bool isANSI = this.sdtr.ReadBit();
bool isWideOffsets = this.sdtr.ReadBit();
bool isWideCodes = this.sdtr.ReadBit();
bool isItalic = this.sdtr.ReadBit();
bool isBold = this.sdtr.ReadBit();
if (!isWideCodes)
{
throw new SWFModellerException(SWFModellerError.SWFParsing,
"Non-wide codes in font encodings are not valid.", swf.Context);
}
if (isShiftJIS)
{
/* ISSUE 50 */
throw new SWFModellerException(SWFModellerError.UnimplementedFeature,
"ShiftJIS character encoding is not supported.", swf.Context);
}
int language = this.sdtr.ReadUI8();
string name = this.sdtr.ReadLengthedUTF8(this.sdtr.ReadUI8());
int numGlyphs = this.sdtr.ReadUI16();
#if DEBUG
this.Log("id=" + fontID + ", name=" + name);
#endif
SWFFont font = new SWFFont(
(SWFFont.Language)language,
name,
isBold,
isItalic,
isSmallText,
numGlyphs);
int startOffset = (int)this.sdtr.Offset; /* The offset table measures from this point. */
int[] shapeOffsets = new int[numGlyphs];
for (int i = 0; i < numGlyphs; i++)
{
shapeOffsets[i] = isWideOffsets ? (int)this.sdtr.ReadUI32() : this.sdtr.ReadUI16();
}
int codeTableOffset = isWideOffsets ? (int)this.sdtr.ReadUI32() : this.sdtr.ReadUI16();
IShape[] shapes = new IShape[numGlyphs];
for (int i = 0; i < numGlyphs; i++)
{
int shapeOffset = (int)sdtr.Offset - startOffset;
if (shapeOffsets[i] != shapeOffset)
{
throw new SWFModellerException(SWFModellerError.SWFParsing, "Bad font data.", swf.Context);
}
int end = codeTableOffset;
if (i < numGlyphs - 1)
{
end = shapeOffsets[i + 1];
}
int len = end - shapeOffset;
byte[] shapeData = this.sdtr.ReadByteBlock(len);
shapes[i] = new ShapeParser().Parse(fontType, shapeData, this);
}
char[] codes = new char[numGlyphs];
for (int i = 0; i < numGlyphs; i++)
{
codes[i] = (char)this.sdtr.ReadUI16();
font.AddGlyph(codes[i], shapes[i]);
}
if (hasLayout)
{
font.Ascent = this.sdtr.ReadSI16();
font.Descent = this.sdtr.ReadSI16();
font.Leading = this.sdtr.ReadSI16();
GlyphLayout[] layouts = new GlyphLayout[numGlyphs];
for (int i = 0; i < numGlyphs; i++)
{
layouts[i] = new GlyphLayout()
{
Advance = this.sdtr.ReadSI16()
};
}
for (int i = 0; i < numGlyphs; i++)
{
layouts[i].Bounds = this.sdtr.ReadRect();
font.AddLayout(codes[i], layouts[i]);
}
int kerningCount = this.sdtr.ReadUI16();
KerningPair[] kernTable = new KerningPair[kerningCount];
for (int i = 0; i < kerningCount; i++)
{
kernTable[i] = new KerningPair()
{
LeftChar = (char)(isWideCodes ? this.sdtr.ReadUI16() : this.sdtr.ReadUI8()),
RightChar = (char)(isWideCodes ? this.sdtr.ReadUI16() : this.sdtr.ReadUI8()),
Adjustment = this.sdtr.ReadSI16()
};
}
font.KerningTable = kernTable;
}
fontDict.Add(fontID, font);
swf.AddFont(font);
}
/// <summary>
/// Adds a font to the SWF.
/// </summary>
/// <param name="font">The font.</param>
internal void AddFont(SWFFont font)
{
this.fonts.Add(font);
}
