/// <summary>
/// Convert source objects into a source string
/// </summary>
/// <param name="fontSource"></param>
/// <param name="commonSettings"></param>
/// <returns></returns>
public static string ConvertToSourceString(IFontSource fontSource, IEPubCommonSettings commonSettings)
{
var builder = new StringBuilder();
switch (fontSource.Type)
{
case SourceTypes.External:
builder.AppendFormat(@" url({0}) ", fontSource.Location);
break;
case SourceTypes.Local:
builder.AppendFormat(" local(\"{0}\") ", fontSource.Location);
break;
case SourceTypes.Embedded:
if (!commonSettings.EmbedStyles)
{
builder.AppendFormat(commonSettings.FlatStructure? @" url({0}) " : @" url(../fonts/{0}) ", Path.GetFileName(fontSource.Location.ToLower()));
}
else
{
builder.AppendFormat(commonSettings.FlatStructure ? @" url(../{0}) " : @" url(fonts/{0}) ", Path.GetFileName(fontSource.Location.ToLower()));
}
break;
default:
Logger.Log.ErrorFormat("Unknown font source type : {0}", fontSource.Type);
break;
}
return(builder.ToString());
}
/// <summary>
/// Convert source objects into a source string
/// </summary>
/// <param name="fontSource"></param>
/// <param name="commonSettings"></param>
/// <returns></returns>
public static string ConvertToSourceString(IFontSource fontSource, IEPubCommonSettings commonSettings)
{
var builder = new StringBuilder();
switch (fontSource.Type)
{
case SourceTypes.External:
builder.AppendFormat(@" url({0}) ", fontSource.Location);
break;
case SourceTypes.Local:
builder.AppendFormat(" local(\"{0}\") ", fontSource.Location);
break;
case SourceTypes.Embedded:
if (!commonSettings.EmbedStyles)
{
builder.AppendFormat(commonSettings.FlatStructure? @" url({0}) " : @" url(../fonts/{0}) ", Path.GetFileName(fontSource.Location.ToLower()));
}
else
{
builder.AppendFormat(commonSettings.FlatStructure ? @" url(../{0}) " : @" url(fonts/{0}) ", Path.GetFileName(fontSource.Location.ToLower()));
}
break;
default:
Logger.Log.ErrorFormat("Unknown font source type : {0}", fontSource.Type);
break;
}
return builder.ToString();
}
public int CreateStreamFromKey(IntPtr fontFileReferenceKey,
uint fontFileReferenceKeySize,
out IDWriteFontFileStreamMirror fontFileStream)
{
uint numberOfCharacters = fontFileReferenceKeySize / 2;
fontFileStream = null;
if ((fontFileReferenceKeySize % 2 != 0) || // The fontFileReferenceKeySize must be divisible by sizeof(WCHAR)
(numberOfCharacters <= 1) || // The fontFileReferenceKey cannot be less than or equal 1 character as it has to contain the NULL character.
(Marshal.ReadInt16(fontFileReferenceKey, ((int)numberOfCharacters - 1) * 2) != '\0')) // The fontFileReferenceKey must end with the NULL character
{
return(unchecked ((int)0x80070057)); // E_INVALIDARG
}
string uriString = Marshal.PtrToStringUni(fontFileReferenceKey);
int hr = 0;
try
{
IFontSource fontSource = _fontSourceFactory.Create(uriString);
FontFileStream customFontFileStream = new FontFileStream(fontSource);
fontFileStream = (IDWriteFontFileStreamMirror)customFontFileStream;
}
catch (System.Exception exception)
{
hr = Marshal.GetHRForException(exception);
}
return(hr);
}
public void CopyFrom(IFontSource fontSource)
{
if (fontSource == null)
{
throw new ArgumentNullException("fontSource");
}
if (fontSource == this)
{
return;
}
Type = fontSource.Type;
Location = fontSource.Location;
Format = fontSource.Format;
}
public void CopyFrom(IFontSource fontSource)
{
if (fontSource == null)
{
throw new ArgumentNullException("fontSource");
}
if (fontSource == this)
{
return;
}
Type = fontSource.Type;
Location = fontSource.Location;
Format = fontSource.Format;
}
internal int?GetCodepointIndex(int codepoint, out IFontSource font)
{
font = null;
var g = default(int?);
foreach (var f in _fontSources)
{
g = f.GetGlyphId(codepoint);
if (g != null)
{
font = f;
break;
}
}
return(g);
}
private static string GetFontName(IFontSource fontSource)
{
switch (fontSource.Type)
{
case SourceTypes.Local:
return(fontSource.Location);
case SourceTypes.External:
case SourceTypes.Embedded:
string shortName = Path.GetFileNameWithoutExtension(fontSource.Location);
if (!string.IsNullOrEmpty(shortName))
{
return(shortName);
}
return(fontSource.Location);
}
return(string.Empty);
}
public FontFile CreateFontFile(Uri filePathUri)
{
IDWriteFontFile dwriteFontFile = null;
try {
dwriteFontFile = CreateFontFile(_pFactory, WpfFontFileLoader, filePathUri);
}
catch {
// If DWrite's CreateFontFileReference fails then try opening the file using WPF's logic.
// The failures that WPF returns are more granular than the HRESULTs that DWrite returns
// thus we use WPF's logic to open the file to throw the same exceptions that
// WPF would have thrown before.
IFontSource fontSource = _fontSourceFactory.Create(filePathUri.AbsoluteUri);
fontSource.TestFileOpenable();
throw;
}
return(new FontFile(dwriteFontFile));
}
public FontFileStream(IFontSource fontSource)
{
// Previously we were using fontSource->GetStream() which caused crashes in the XPS scenarios
// as the stream was getting closed by some other object. In XPS scenarios GetStream() would return
// MS::Internal::IO:Packaging::SynchronizingStream which is owned by the XPS docs and
// is known to have issues regarding the lifetime management where by if the current XPS page is
// flipped then the stream will get disposed. Thus, we cannot rely on the stream directly and hence we now use
// fontSource->GetUnmanagedStream() which returns a copy of the content of the stream. Special casing XPS will not
// guarantee that this problem will be fixed so we will use the GetUnmanagedStream(). Note: This path will only
// be taken for embedded fonts among which XPS is a main scenario. For local fonts we use DWrite's APIs.
_fontSourceStream = fontSource.GetUnmanagedStream();
try
{
_lastWriteTime = fontSource.GetLastWriteTimeUtc().ToFileTimeUtc();
}
catch (ArgumentOutOfRangeException) //The resulting file time would represent a date and time before 12:00 midnight January 1, 1601 C.E. UTC.
{
_lastWriteTime = -1;
}
// Create lock to control access to font source stream.
_fontSourceStreamLock = new Object();
}
unsafe public FontFace CreateFontFace(Uri filePathUri, uint faceIndex, FontSimulations fontSimulationFlags)
{
FontFile fontFile = CreateFontFile(filePathUri);
FontFileType dwriteFontFileType;
FontFaceType dwriteFontFaceType;
uint numberOfFaces = 0;
int hr;
if (fontFile.Analyze(
out dwriteFontFileType,
out dwriteFontFaceType,
out numberOfFaces,
out hr
))
{
if (faceIndex >= numberOfFaces)
{
throw new ArgumentOutOfRangeException("faceIndex");
}
IntPtr dwriteFontFace = IntPtr.Zero; // IDWriteFontFace
IntPtr dwriteFontFile = fontFile.DWriteFontFileIface;
try {
dwriteFontFace = _pFactory.CreateFontFace(
dwriteFontFaceType,
1,
&dwriteFontFile,
faceIndex,
fontSimulationFlags
);
}
finally {
Marshal.Release(dwriteFontFile);
}
return(new FontFace(dwriteFontFace));
}
// This path is here because there is a behavior mismatch between DWrite and WPF.
// If a directory was given instead of a font uri WPF previously throws
// System.UnauthorizedAccessException. We handle most of the exception behavior mismatch
// in FontFile^ Factory::CreateFontFile by opening the file using WPF's previous (prior to DWrite integration) logic if
// CreateFontFileReference fails (please see comments in FontFile^ Factory::CreateFontFile).
// However in this special case DWrite's CreateFontFileReference will succeed if given
// a directory instead of a font file and it is the Analyze() call will fail returning DWRITE_E_FILEFORMAT.
// Thus, incase the hr returned from Analyze() was DWRITE_E_FILEFORMAT we do as we did in FontFile^ Factory::CreateFontFile
// to try and open the file using WPF old logic and throw System.UnauthorizedAccessException as WPF used to do.
// If a file format exception is expected then opening the file should succeed and ConvertHresultToException()
// Should throw the correct exception.
// A final note would be that this overhead is only incurred in error conditions and so the normal execution path should
// not be affected.
else
{
if (hr == unchecked ((int)0x88985000)) // DWRITE_E_FILEFORMAT
{
IFontSource fontSource = _fontSourceFactory.Create(filePathUri.AbsoluteUri);
fontSource.TestFileOpenable();
}
Marshal.ThrowExceptionForHR(hr);
}
return(null);
}
private static string GetFontName(IFontSource fontSource)
{
switch (fontSource.Type)
{
case SourceTypes.Local:
return fontSource.Location;
case SourceTypes.External:
case SourceTypes.Embedded:
string shortName = Path.GetFileNameWithoutExtension(fontSource.Location);
if (!string.IsNullOrEmpty(shortName))
{
return shortName;
}
return fontSource.Location;
}
return string.Empty;
}
public void RenderGlyph(ITexture2DManager textureManager, DynamicFontGlyph glyph, IFontSource fontSource, int blurAmount, int strokeAmount, bool premultiplyAlpha, int kernelWidth, int kernelHeight)
#endif
{
var pad = Math.Max(DynamicFontGlyph.PadFromBlur(blurAmount), DynamicFontGlyph.PadFromBlur(strokeAmount));
// Render glyph to byte buffer
var bufferSize = glyph.Bounds.Width * glyph.Bounds.Height;
var buffer = _byteBuffer;
if ((buffer == null) || (buffer.Length < bufferSize))
{
buffer = new byte[bufferSize];
_byteBuffer = buffer;
}
Array.Clear(buffer, 0, bufferSize);
var colorBuffer = _colorBuffer;
if ((colorBuffer == null) || (colorBuffer.Length < bufferSize * 4))
{
colorBuffer = new byte[bufferSize * 4];
_colorBuffer = colorBuffer;
}
fontSource.RasterizeGlyphBitmap(glyph.Id,
glyph.Size,
buffer,
pad + pad * glyph.Bounds.Width,
glyph.Bounds.Width - pad * 2,
glyph.Bounds.Height - pad * 2,
glyph.Bounds.Width);
if (strokeAmount > 0)
{
var width = glyph.Bounds.Width;
var top = width * strokeAmount;
var bottom = (glyph.Bounds.Height - strokeAmount) * glyph.Bounds.Width;
var right = glyph.Bounds.Width - strokeAmount;
var left = strokeAmount;
byte d;
for (var i = 0; i < bufferSize; ++i)
{
var ci = i * 4;
var col = buffer[i];
var black = 0;
if (col == 255)
{
colorBuffer[ci] = colorBuffer[ci + 1] = colorBuffer[ci + 2] = colorBuffer[ci + 3] = 255;
continue;
}
if (i >= top)
{
black = buffer[i - top];
}
if (i < bottom)
{
d = buffer[i + top];
black = ((255 - d) * black + 255 * d) / 255;
}
if (i % width >= left)
{
d = buffer[i - strokeAmount];
black = ((255 - d) * black + 255 * d) / 255;
}
if (i % width < right)
{
d = buffer[i + strokeAmount];
black = ((255 - d) * black + 255 * d) / 255;
}
if (black == 0)
{
if (col == 0)
{
colorBuffer[ci] = colorBuffer[ci + 1] = colorBuffer[ci + 2] = colorBuffer[ci + 3] = 0; //black transparency to suit stroke
continue;
}
if (premultiplyAlpha)
{
colorBuffer[ci] = colorBuffer[ci + 1] = colorBuffer[ci + 2] = colorBuffer[ci + 3] = col;
}
else
{
colorBuffer[ci] = colorBuffer[ci + 1] = colorBuffer[ci + 2] = 255;
colorBuffer[ci + 3] = col;
}
}
else
{
if (col == 0)
{
colorBuffer[ci] = colorBuffer[ci + 1] = colorBuffer[ci + 2] = 0;
colorBuffer[ci + 3] = (byte)black;
continue;
}
if (premultiplyAlpha)
{
var alpha = ((255 - col) * black + 255 * col) / 255;
colorBuffer[ci] = colorBuffer[ci + 1] = colorBuffer[ci + 2] = (byte)((alpha * col) / 255);
colorBuffer[ci + 3] = (byte)alpha;
}
else
{
colorBuffer[ci] = colorBuffer[ci + 1] = colorBuffer[ci + 2] = col;
colorBuffer[ci + 3] = (byte)(((255 - col) * black + 255 * col) / 255);
}
}
}
}
else
{
if (blurAmount > 0)
{
fixed(byte *bdst = &buffer[0])
{
Blur(bdst, glyph.Bounds.Width, glyph.Bounds.Height, glyph.Bounds.Width, blurAmount);
}
}
for (var i = 0; i < bufferSize; ++i)
{
var ci = i * 4;
var c = buffer[i];
if (premultiplyAlpha)
{
colorBuffer[ci] = colorBuffer[ci + 1] = colorBuffer[ci + 2] = colorBuffer[ci + 3] = c;
}
else
{
colorBuffer[ci] = colorBuffer[ci + 1] = colorBuffer[ci + 2] = 255;
colorBuffer[ci + 3] = c;
}
}
}
#if MONOGAME || FNA || STRIDE
// Write to texture
if (Texture == null)
{
Texture = Texture2DManager.CreateTexture(graphicsDevice, Width, Height);
}
Texture2DManager.SetTextureData(Texture, glyph.Bounds, colorBuffer);
#else
// Write to texture
if (Texture == null)
{
Texture = textureManager.CreateTexture(Width, Height);
}
textureManager.SetTextureData(Texture, glyph.Bounds, colorBuffer);
#endif
}
public void RenderGlyph(GraphicsDevice graphicsDevice, DynamicFontGlyph glyph, IFontSource fontSource, int blurAmount, int strokeAmount, bool premultiplyAlpha, int kernelWidth, int kernelHeight)
public FontFileStream(IFontSource fontSource)
{
}
