/// <summary>
/// Function to read the kerning pairs for the font, if they exist.
/// </summary>
/// <param name="fontFile">Font file to read.</param>
private static Dictionary <GorgonKerningPair, int> ReadKernPairs(GorgonChunkFileReader fontFile)
{
var result = new Dictionary <GorgonKerningPair, int>();
GorgonBinaryReader reader = fontFile.OpenChunk(KernDataChunk);
// Read optional kerning information.
int kernCount = reader.ReadInt32();
for (int i = 0; i < kernCount; ++i)
{
var kernPair = new GorgonKerningPair(reader.ReadChar(), reader.ReadChar());
result[kernPair] = reader.ReadInt32();
}
fontFile.CloseChunk();
return(result);
}
/// <summary>Function to read back the specifics of the font brush data from a file reader.</summary>
/// <param name="reader">The reader used to read the brush data.</param>
internal override void ReadBrushData(GorgonBinaryReader reader)
{
WrapMode = (GlyphBrushWrapMode)reader.ReadInt32();
int count = reader.ReadInt32();
Points.Clear();
for (int i = 0; i < count; ++i)
{
Points.Add(reader.ReadValue <DX.Vector2>());
}
BlendFactors.Clear();
count = reader.ReadInt32();
for (int i = 0; i < count; ++i)
{
BlendFactors.Add(reader.ReadSingle());
}
BlendPositions.Clear();
count = reader.ReadInt32();
for (int i = 0; i < count; ++i)
{
BlendPositions.Add(reader.ReadSingle());
}
CenterColor = new GorgonColor(reader.ReadInt32());
CenterPoint = reader.ReadValue <DX.Vector2>();
FocusScales = reader.ReadValue <DX.Vector2>();
count = reader.ReadInt32();
Interpolation.Clear();
for (int i = 0; i < count; ++i)
{
Interpolation.Add(new GorgonGlyphBrushInterpolator(reader.ReadSingle(), new GorgonColor(reader.ReadInt32())));
}
count = reader.ReadInt32();
SurroundColors.Clear();
for (int i = 0; i < count; ++i)
{
SurroundColors.Add(new GorgonColor(reader.ReadInt32()));
}
}
/// <summary>
/// Function to enumerate the files and directories for a mount point.
/// </summary>
/// <param name="physicalMountPoint">Mount point being enumerated.</param>
/// <param name="mountPoint">Directory to hold the sub directories and files.</param>
/// <param name="physicalDirectories">A list of directories in the physical file system (formatted to the virtual file system).</param>
/// <param name="physicalFiles">A list of files in the physical file system (formatted to the virtual file system).</param>
protected override void Enumerate(string physicalMountPoint, GorgonFileSystemDirectory mountPoint,
out string[] physicalDirectories, out PhysicalFileInfo[] physicalFiles)
{
using (var reader = new GorgonBinaryReader(File.Open(physicalMountPoint, FileMode.Open, FileAccess.Read, FileShare.Read), false))
{
// Skip the header.
reader.ReadString();
int indexLength = reader.ReadInt32();
byte[] indexData = Decompress(reader.ReadBytes(indexLength));
string xmlData = Encoding.UTF8.GetString(indexData);
ParseIndexXML(physicalMountPoint, mountPoint, XDocument.Parse(xmlData, LoadOptions.None),
reader.BaseStream.Position, out physicalDirectories, out physicalFiles);
}
}
/// <summary>
/// Function to enumerate the files and directories from a physical location and map it to a virtual location.
/// </summary>
/// <param name="physicalLocation">The physical location containing files and directories to enumerate.</param>
/// <param name="mountPoint">A <see cref="IGorgonVirtualDirectory"/> that the directories and files from the physical file system will be mounted into.</param>
/// <returns>A <see cref="GorgonPhysicalFileSystemData"/> object containing information about the directories and files contained within the physical file system.</returns>
/// <exception cref="ArgumentNullException">Thrown when the <paramref name="physicalLocation"/>, or the <paramref name="mountPoint"/> parameters are <b>null</b>.</exception>
/// <exception cref="ArgumentEmptyException">Thrown when the <paramref name="physicalLocation"/> parameter is empty.</exception>
/// <remarks>
/// <para>
/// This will return a <see cref="GorgonPhysicalFileSystemData"/> representing the paths to directories and <see cref="IGorgonPhysicalFileInfo"/> objects under the virtual file system. Each file
/// system file and directory is mapped from its <paramref name="physicalLocation"/> on the physical file system to a <paramref name="mountPoint"/> on the virtual file system. For example, if the
/// mount point is set to <c>/MyMount/</c>, and the physical location of a file is <c>c:\SourceFileSystem\MyDirectory\MyTextFile.txt</c>, then the returned value should be
/// <c>/MyMount/MyDirectory/MyTextFile.txt</c>.
/// </para>
/// <para>
/// Implementors of a <see cref="GorgonFileSystemProvider"/> plug in can override this method to read the list of files from another type of file system, like a Zip file.
/// </para>
/// <para>
/// Implementors of a <see cref="GorgonFileSystemProvider"/> should override this method to read the list of directories and files from another type of file system, like a Zip file.
/// The default functionality will only enumerate directories and files from the operating system file system.
/// </para>
/// </remarks>
protected override GorgonPhysicalFileSystemData OnEnumerate(string physicalLocation, IGorgonVirtualDirectory mountPoint)
{
using (var reader = new GorgonBinaryReader(File.Open(physicalLocation, FileMode.Open, FileAccess.Read, FileShare.Read)))
{
// Skip the header.
reader.ReadString();
int indexLength = reader.ReadInt32();
byte[] indexData = Decompress(reader.ReadBytes(indexLength));
string xmlData = Encoding.UTF8.GetString(indexData);
var index = XDocument.Parse(xmlData, LoadOptions.None);
return(new GorgonPhysicalFileSystemData(EnumerateDirectories(index, mountPoint),
EnumerateFiles(index, reader.BaseStream.Position, physicalLocation, mountPoint)));
}
}
/// <summary>Function to read back the specifics of the font brush data from a file reader.</summary>
/// <param name="reader">The reader used to read the brush data.</param>
internal override void ReadBrushData(GorgonBinaryReader reader)
{
Angle = reader.ReadSingle();
ScaleAngle = reader.ReadBoolean();
GammaCorrection = reader.ReadBoolean();
int interpCount = reader.ReadInt32();
if (interpCount == 0)
{
return;
}
Interpolation.Clear();
for (int i = 0; i < interpCount; ++i)
{
Interpolation.Add(new GorgonGlyphBrushInterpolator(reader.ReadSingle(), new GorgonColor(reader.ReadInt32())));
}
}
/// <summary>
/// Function to read the chunk containing the font information.
/// </summary>
/// <param name="fontFile">The chunk file reader containing the font data.</param>
/// <param name="name">Used defined name for the font.</param>
/// <returns>A new <seealso cref="IGorgonFontInfo"/> containing information about the font.</returns>
private static GorgonFontInfo GetFontInfo(GorgonChunkFileReader fontFile, string name)
{
GorgonBinaryReader reader = fontFile.OpenChunk(FontInfoChunk);
var info = new GorgonFontInfo(reader.ReadString(), reader.ReadSingle(), reader.ReadValue <FontHeightMode>(), name)
{
FontStyle = reader.ReadValue <FontStyle>(),
DefaultCharacter = reader.ReadChar(),
Characters = reader.ReadString(),
AntiAliasingMode = reader.ReadValue <FontAntiAliasMode>(),
OutlineColor1 = new GorgonColor(reader.ReadInt32()),
OutlineColor2 = new GorgonColor(reader.ReadInt32()),
OutlineSize = reader.ReadInt32(),
PackingSpacing = reader.ReadInt32(),
TextureWidth = reader.ReadInt32(),
TextureHeight = reader.ReadInt32(),
UsePremultipliedTextures = reader.ReadValue <bool>(),
UseKerningPairs = reader.ReadBoolean()
};
fontFile.CloseChunk();
return(info);
}
/// <summary>
/// Function to load a version 1.x Gorgon sprite.
/// </summary>
/// <param name="sprite">Sprite to fill in with data.</param>
/// <param name="reader">Binary reader to use to read in the data.</param>
public static void LoadSprite(GorgonSprite sprite, GorgonBinaryReader reader)
{
Version version;
string imageName = string.Empty;
sprite.IsV1Sprite = true;
reader.BaseStream.Position = 0;
string headerVersion = reader.ReadString();
if ((!headerVersion.StartsWith("GORSPR", StringComparison.OrdinalIgnoreCase)) || (headerVersion.Length < 7))
{
throw new GorgonException(GorgonResult.CannotRead, Resources.GOR2D_SPRITE_CANNOT_READ_V1_SPRITE);
}
// Get the version information.
switch (headerVersion.ToUpperInvariant())
{
case "GORSPR1":
version = new Version(1, 0);
break;
case "GORSPR1.1":
version = new Version(1, 1);
break;
case "GORSPR1.2":
version = new Version(1, 2);
break;
default:
throw new GorgonException(GorgonResult.CannotRead, Resources.GOR2D_SPRITE_CANNOT_READ_V1_SPRITE);
}
// We don't need the sprite name.
reader.ReadString();
// Find out if we have an image.
if (reader.ReadBoolean())
{
bool isRenderTarget = reader.ReadBoolean();
imageName = reader.ReadString();
// We won't be supporting reading render targets from sprites in this version.
if (isRenderTarget)
{
// Skip the target data.
reader.ReadInt32();
reader.ReadInt32();
reader.ReadInt32();
reader.ReadBoolean();
reader.ReadBoolean();
}
}
// We don't use "inherited" values anymore. But we need them because
// the file doesn't include inherited data.
bool InheritAlphaMaskFunction = reader.ReadBoolean();
bool InheritAlphaMaskValue = reader.ReadBoolean();
bool InheritBlending = reader.ReadBoolean();
bool InheritHorizontalWrapping = reader.ReadBoolean();
bool InheritSmoothing = reader.ReadBoolean();
bool InheritStencilCompare = reader.ReadBoolean();
bool InheritStencilEnabled = reader.ReadBoolean();
bool InheritStencilFailOperation = reader.ReadBoolean();
bool InheritStencilMask = reader.ReadBoolean();
bool InheritStencilPassOperation = reader.ReadBoolean();
bool InheritStencilReference = reader.ReadBoolean();
bool InheritStencilZFailOperation = reader.ReadBoolean();
bool InheritVerticalWrapping = reader.ReadBoolean();
bool InheritDepthBias = true;
bool InheritDepthTestFunction = true;
bool InheritDepthWriteEnabled = true;
// Get version 1.1 fields.
if ((version.Major == 1) && (version.Minor >= 1))
{
InheritDepthBias = reader.ReadBoolean();
InheritDepthTestFunction = reader.ReadBoolean();
InheritDepthWriteEnabled = reader.ReadBoolean();
}
// Get the size of the sprite.
sprite.Size = new Vector2(reader.ReadSingle(), reader.ReadSingle());
// Older versions of the sprite object used pixel space for their texture coordinates. We will have to
// fix up these coordinates into texture space once we have a texture loaded. At this point, there's no guarantee
// that the texture was loaded safely, so we'll have to defer it until later.
// Also, older versions used the size the determine the area on the texture to cover. So use the size to
// get the texture bounds.
var textureOffset = new Vector2(reader.ReadSingle(), reader.ReadSingle());
sprite.TextureOffset = textureOffset;
sprite.TextureSize = sprite.Size;
// Read the anchor.
sprite.Anchor = new Vector2(reader.ReadSingle(), reader.ReadSingle());
// Get vertex offsets.
sprite.SetCornerOffset(RectangleCorner.UpperLeft, new Vector2(reader.ReadSingle(), reader.ReadSingle()));
sprite.SetCornerOffset(RectangleCorner.UpperRight, new Vector2(reader.ReadSingle(), reader.ReadSingle()));
sprite.SetCornerOffset(RectangleCorner.LowerRight, new Vector2(reader.ReadSingle(), reader.ReadSingle()));
sprite.SetCornerOffset(RectangleCorner.LowerLeft, new Vector2(reader.ReadSingle(), reader.ReadSingle()));
// Get vertex colors.
sprite.SetCornerColor(RectangleCorner.UpperLeft, new GorgonColor(reader.ReadInt32()));
sprite.SetCornerColor(RectangleCorner.UpperRight, new GorgonColor(reader.ReadInt32()));
sprite.SetCornerColor(RectangleCorner.LowerLeft, new GorgonColor(reader.ReadInt32()));
sprite.SetCornerColor(RectangleCorner.LowerRight, new GorgonColor(reader.ReadInt32()));
// Skip shader information. Version 1.0 had shader information attached to the sprite.
if ((version.Major == 1) && (version.Minor < 1))
{
if (reader.ReadBoolean())
{
reader.ReadString();
reader.ReadBoolean();
if (reader.ReadBoolean())
{
reader.ReadString();
}
}
}
// We no longer have an alpha mask function.
if (!InheritAlphaMaskFunction)
{
reader.ReadInt32();
}
if (!InheritAlphaMaskValue)
{
// Direct 3D 9 used a value from 0..255 for alpha masking, we use
// a scalar value so convert to a scalar.
sprite.AlphaTestValues = new GorgonRangeF(0.0f, reader.ReadInt32() / 255.0f);
}
// Set the blending mode.
if (!InheritBlending)
{
sprite.Blending.SourceBlend = ConvertBlendOpToBlendType(reader.ReadInt32());
sprite.Blending.DestinationBlend = ConvertBlendOpToBlendType(reader.ReadInt32());
// Skip the blending mode, this gets detected automatically now.
reader.ReadInt32();
}
// Get alpha blending mode.
if ((version.Major == 1) && (version.Minor >= 2))
{
sprite.Blending.DestinationAlphaBlend = ConvertBlendOpToBlendType(reader.ReadInt32());
sprite.Blending.SourceAlphaBlend = ConvertBlendOpToBlendType(reader.ReadInt32());
}
// Get horizontal wrapping mode.
if (!InheritHorizontalWrapping)
{
sprite.TextureSampler.HorizontalWrapping = ConvertImageAddressToTextureAddress(reader.ReadInt32());
}
// Get smoothing mode.
if (!InheritSmoothing)
{
sprite.TextureSampler.TextureFilter = ConvertSmoothingToFilter(reader.ReadInt32());
}
// Get stencil stuff.
if (!InheritStencilCompare)
{
sprite.DepthStencil.FrontFace.ComparisonOperator = ConvertCompare(reader.ReadInt32());
}
if (!InheritStencilEnabled)
{
// We don't enable stencil in the same way anymore, so skip this value.
reader.ReadBoolean();
}
if (!InheritStencilFailOperation)
{
sprite.DepthStencil.FrontFace.FailOperation = ConvertStencilOp(reader.ReadInt32());
}
if (!InheritStencilMask)
{
sprite.DepthStencil.StencilReadMask = (byte)(reader.ReadInt32() & 0xFF);
}
if (!InheritStencilPassOperation)
{
sprite.DepthStencil.FrontFace.PassOperation = ConvertStencilOp(reader.ReadInt32());
}
if (!InheritStencilReference)
{
sprite.DepthStencil.StencilReference = reader.ReadInt32();
}
if (!InheritStencilZFailOperation)
{
sprite.DepthStencil.FrontFace.DepthFailOperation = ConvertStencilOp(reader.ReadInt32());
}
// Get vertical wrapping mode.
if (!InheritVerticalWrapping)
{
sprite.TextureSampler.VerticalWrapping = ConvertImageAddressToTextureAddress(reader.ReadInt32());
}
// Get depth info.
if ((version.Major == 1) && (version.Minor >= 1))
{
if (!InheritDepthBias)
{
// Depth bias values are quite different on D3D9 than they are on D3D11, so skip this.
reader.ReadSingle();
}
if (!InheritDepthTestFunction)
{
sprite.DepthStencil.DepthComparison = ConvertCompare(reader.ReadInt32());
}
if (!InheritDepthWriteEnabled)
{
sprite.DepthStencil.IsDepthWriteEnabled = reader.ReadBoolean();
}
sprite.TextureSampler.BorderColor = new GorgonColor(reader.ReadInt32());
}
// Get flipped flags.
sprite.HorizontalFlip = reader.ReadBoolean();
sprite.VerticalFlip = reader.ReadBoolean();
// Bind the texture (if we have one bound to this sprite) if it's already loaded, otherwise defer it.
if (string.IsNullOrEmpty(imageName))
{
return;
}
sprite.DeferredTextureName = imageName;
}
/// <summary>Function to read back the specifics of the font brush data from a file reader.</summary>
/// <param name="reader">The reader used to read the brush data.</param>
internal override void ReadBrushData(GorgonBinaryReader reader)
{
HatchStyle = (GlyphBrushHatchStyle)reader.ReadInt32();
ForegroundColor = new GorgonColor(reader.ReadInt32());
BackgroundColor = new GorgonColor(reader.ReadInt32());
}
/// <summary>
/// Function to load the font data, with the specified size, from a stream.
/// </summary>
/// <param name="name">The name to assign to the font.</param>
/// <param name="stream">The stream containing the font data.</param>
/// <returns>A new <seealso cref="GorgonFont"/>, or, an existing font from the <seealso cref="GorgonFontFactory"/> cache.</returns>
protected override GorgonFont OnLoadFromStream(string name, Stream stream)
{
var fontFile = new GorgonChunkFileReader(stream,
new[]
{
FileHeader.ChunkID()
});
GorgonFontInfo fontInfo = null;
try
{
fontFile.Open();
fontInfo = GetFontInfo(fontFile, name);
// If the font is already loaded, then just reuse it.
if (Factory.HasFont(fontInfo))
{
return(Factory.GetFont(fontInfo));
}
GorgonBinaryReader reader = fontFile.OpenChunk(FontHeightChunk);
// Read in information about the font height.
float fontHeight = reader.ReadSingle();
float lineHeight = reader.ReadSingle();
float ascent = reader.ReadSingle();
float descent = reader.ReadSingle();
fontFile.CloseChunk();
if (fontFile.Chunks.Contains(BrushChunk))
{
reader = fontFile.OpenChunk(BrushChunk);
var brushType = (GlyphBrushType)reader.ReadInt32();
switch (brushType)
{
case GlyphBrushType.Hatched:
fontInfo.Brush = new GorgonGlyphHatchBrush();
break;
case GlyphBrushType.LinearGradient:
fontInfo.Brush = new GorgonGlyphLinearGradientBrush();
break;
case GlyphBrushType.PathGradient:
fontInfo.Brush = new GorgonGlyphPathGradientBrush();
break;
case GlyphBrushType.Texture:
fontInfo.Brush = new GorgonGlyphTextureBrush();
break;
default:
fontInfo.Brush = new GorgonGlyphSolidBrush();
break;
}
fontInfo.Brush.ReadBrushData(reader);
fontFile.CloseChunk();
}
else
{
fontInfo.Brush = new GorgonGlyphSolidBrush();
}
// If this font has kerning data, then load that in.
IReadOnlyDictionary <GorgonKerningPair, int> kerningPairs = null;
if (fontFile.Chunks.Contains(KernDataChunk))
{
kerningPairs = ReadKernPairs(fontFile);
}
return(Factory.GetFont(fontInfo));
}
finally
{
var brush = fontInfo?.Brush as IDisposable;
brush?.Dispose();
fontFile.Close();
}
}
/// <summary>Function to read back the specifics of the font brush data from a file reader.</summary> /// <param name="reader">The reader used to read the brush data.</param> internal override void ReadBrushData(GorgonBinaryReader reader) => Color = new GorgonColor(reader.ReadInt32());
public void ChunkReaderWriter()
{
const string stringChunk = "STRSCHNK";
const string intChunk = "INTSCHNK";
const string header = "TheHeader";
string[] strs =
{
"Cow",
"Dog",
"Cat",
"Rabbit",
"Duck"
};
int[] ints =
{
32,
11,
89,
64,
87,
77,
16,
2,
42
};
int expectedStrLength = strs.Length;
int expectedIntsLength = ints.Length;
using (MemoryStream stream = new MemoryStream())
{
var fileWriter = new GorgonChunkFileWriter(stream, header.ChunkID());
fileWriter.Open();
GorgonBinaryWriter writer = fileWriter.OpenChunk(stringChunk.ChunkID());
writer.Write(strs.Length);
foreach (string str in strs)
{
writer.Write(str);
}
fileWriter.CloseChunk();
writer = fileWriter.OpenChunk(intChunk.ChunkID());
writer.Write(ints.Length);
foreach (int intVal in ints)
{
writer.Write(intVal);
}
fileWriter.CloseChunk();
fileWriter.Close();
stream.Position = 0;
var fileReader = new GorgonChunkFileReader(stream,
new[]
{
header.ChunkID()
});
fileReader.Open();
GorgonBinaryReader reader = fileReader.OpenChunk(intChunk.ChunkID());
int numInts = reader.ReadInt32();
Assert.AreEqual(expectedIntsLength, numInts);
int[] intVals = new int[numInts];
for (int i = 0; i < numInts; ++i)
{
intVals[i] = reader.ReadInt32();
}
Assert.IsTrue(ints.SequenceEqual(intVals));
fileReader.CloseChunk();
reader = fileReader.OpenChunk(stringChunk.ChunkID());
int numStrs = reader.ReadInt32();
Assert.AreEqual(expectedStrLength, numStrs);
string[] strVals = new string[numStrs];
for (int i = 0; i < numStrs; ++i)
{
strVals[i] = reader.ReadString();
}
Assert.IsTrue(strs.SequenceEqual(strVals));
fileReader.CloseChunk();
fileReader.Close();
}
}
