//public static bool TryGetFontSourceByFaceName(string faceName, out XFontSource source)
//{
// return FontSourcesByName.TryGetValue(faceName, out source);
//}
internal static void CacheFontResolverInfo(string typefaceKey, FontResolverInfo fontResolverInfo)
{
FontResolverInfo existingfFontResolverInfo;
// Check whether identical font is already registered.
if (FontResolverInfosByName.TryGetValue(typefaceKey, out existingfFontResolverInfo))
{
// Should never come here.
throw new InvalidOperationException(string.Format("A font file with different content already exists with the specified face name '{0}'.", typefaceKey));
}
if (FontResolverInfosByName.TryGetValue(fontResolverInfo.Key, out existingfFontResolverInfo))
{
// Should never come here.
throw new InvalidOperationException(string.Format("A font resolver already exists with the specified key '{0}'.", fontResolverInfo.Key));
}
// Add to both dictionaries.
FontResolverInfosByName.Add(typefaceKey, fontResolverInfo);
FontResolverInfosByName.Add(fontResolverInfo.Key, fontResolverInfo);
}
/// <summary>
/// Internal implementation.
/// </summary>
internal static FontResolverInfo ResolveTypeface(string familyName, FontResolvingOptions fontResolvingOptions, string typefaceKey)
{
// Internally we often have the typeface key already.
if (string.IsNullOrEmpty(typefaceKey))
{
typefaceKey = XGlyphTypeface.ComputeKey(familyName, fontResolvingOptions);
}
// The user may call ResolveTypeface anytime from anywhere, so check cache in FontFactory in the first place.
FontResolverInfo fontResolverInfo;
if (FontFactory.TryGetFontResolverInfoByTypefaceKey(typefaceKey, out fontResolverInfo))
{
return(fontResolverInfo);
}
// Let the platform create the requested font source and save both PlattformResolverInfo
// and XFontSource in FontFactory cache.
// It is possible that we already have the correct font source. E.g. we already have the regular typeface in cache
// and looking now for the italic typeface, but no such font exists. In this case we get the regular font source
// and cache again it with the italic typeface key. Furthermore in glyph typeface style simulation for italic is set.
#if (CORE || GDI) && !WPF
GdiFont gdiFont;
XFontSource fontSource = CreateFontSource(familyName, fontResolvingOptions, out gdiFont, typefaceKey);
#endif
#if WPF && !SILVERLIGHT
WpfFontFamily wpfFontFamily;
WpfTypeface wpfTypeface;
WpfGlyphTypeface wpfGlyphTypeface;
XFontSource fontSource = CreateFontSource(familyName, fontResolvingOptions, out wpfFontFamily, out wpfTypeface, out wpfGlyphTypeface, typefaceKey);
#endif
#if SILVERLIGHT
//GlyphTypeface wpfGlyphTypeface;
XFontSource fontSource = null;//CreateFontSource(familyName, isBold, isItalic, out wpfGlyphTypeface, typefaceKey);
#endif
#if NETFX_CORE || UWP
//GlyphTypeface wpfGlyphTypeface;
XFontSource fontSource = null;//CreateFontSource(familyName, isBold, isItalic, out wpfGlyphTypeface, typefaceKey);
#endif
// If no such font exists return null. PDFsharp will fail.
if (fontSource == null)
{
return(null);
}
//#if (CORE || GDI) && !WPF
// // TODO: Support style simulation for GDI+ platform fonts.
// fontResolverInfo = new PlatformFontResolverInfo(typefaceKey, false, false, gdiFont);
//#endif
if (fontResolvingOptions.OverrideStyleSimulations)
{
#if (CORE || GDI) && !WPF
// TODO: Support style simulation for GDI+ platform fonts.
fontResolverInfo = new PlatformFontResolverInfo(typefaceKey, fontResolvingOptions.MustSimulateBold, fontResolvingOptions.MustSimulateItalic, gdiFont);
#endif
#if WPF && !SILVERLIGHT
fontResolverInfo = new PlatformFontResolverInfo(typefaceKey, fontResolvingOptions.MustSimulateBold, fontResolvingOptions.MustSimulateItalic,
wpfFontFamily, wpfTypeface, wpfGlyphTypeface);
#endif
}
else
{
#if (CORE || GDI) && !WPF
bool mustSimulateBold = gdiFont.Bold && !fontSource.Fontface.os2.IsBold;
bool mustSimulateItalic = gdiFont.Italic && !fontSource.Fontface.os2.IsItalic;
fontResolverInfo = new PlatformFontResolverInfo(typefaceKey, mustSimulateBold, mustSimulateItalic, gdiFont);
#endif
#if WPF && !SILVERLIGHT
// WPF knows what styles have to be simulated.
bool mustSimulateBold = (wpfGlyphTypeface.StyleSimulations & WpfStyleSimulations.BoldSimulation) == WpfStyleSimulations.BoldSimulation;
bool mustSimulateItalic = (wpfGlyphTypeface.StyleSimulations & WpfStyleSimulations.ItalicSimulation) == WpfStyleSimulations.ItalicSimulation;
// Weird behavior of WPF is fixed here in case we request a bold italic typeface.
// If only italic is available, bold is simulated based on italic.
// If only bold is available, italic is simulated based on bold.
// But if both bold and italic is available, italic face is used and bold is simulated.
// The latter case is reversed here, i.e. bold face is used and italic is simulated.
if (fontResolvingOptions.IsBoldItalic && mustSimulateBold && !mustSimulateItalic)
{
// Try to get the bold typeface.
string typefaceKeyBold = XGlyphTypeface.ComputeKey(familyName, true, false);
FontResolverInfo infoBold = ResolveTypeface(familyName,
new FontResolvingOptions(FontHelper.CreateStyle(true, false)), typefaceKeyBold);
// Use it if it does not base on simulateion.
if (infoBold != null && infoBold.StyleSimulations == XStyleSimulations.None)
{
// Use existing bold typeface and simualte italic.
fontResolverInfo = new PlatformFontResolverInfo(typefaceKeyBold, false, true,
wpfFontFamily, wpfTypeface, wpfGlyphTypeface);
}
else
{
// Simulate both.
fontResolverInfo = new PlatformFontResolverInfo(typefaceKey, true, true,
wpfFontFamily, wpfTypeface, wpfGlyphTypeface);
}
}
else
{
fontResolverInfo = new PlatformFontResolverInfo(typefaceKey, mustSimulateBold, mustSimulateItalic,
wpfFontFamily, wpfTypeface, wpfGlyphTypeface);
}
#endif
}
#if SILVERLIGHT
fontResolverInfo = null; //new PlattformResolverInfo(typefaceKey, false, false, wpfGlyphTypeface);
#endif
FontFactory.CacheFontResolverInfo(typefaceKey, fontResolverInfo);
// Register font data under the platform specific face name.
// Already done in CreateFontSource.
// FontFactory.CacheNewFontSource(typefaceKey, fontSource);
return(fontResolverInfo);
}
//// Suffix for internal face names to indicate that the font data comes from the platform
//// and not from the users font resolver.
//public const string PlatformTag = "platform:";
/// <summary>
/// Converts specified information about a required typeface into a specific font.
/// </summary>
/// <param name="familyName">Name of the font family.</param>
/// <param name="fontResolvingOptions">The font resolving options.</param>
/// <param name="typefaceKey">Typeface key if already known by caller, null otherwise.</param>
/// <returns>
/// Information about the typeface, or null if no typeface can be found.
/// </returns>
public static FontResolverInfo ResolveTypeface(string familyName, FontResolvingOptions fontResolvingOptions, string typefaceKey)
{
if (string.IsNullOrEmpty(typefaceKey))
{
typefaceKey = XGlyphTypeface.ComputeKey(familyName, fontResolvingOptions);
}
try
{
Lock.EnterFontFactory();
// Was this typeface requested before?
FontResolverInfo fontResolverInfo;
if (FontResolverInfosByName.TryGetValue(typefaceKey, out fontResolverInfo))
{
return(fontResolverInfo);
}
// Case: This typeface was not yet resolved before.
// Is there a custom font resolver available?
IFontResolver customFontResolver = GlobalFontSettings.FontResolver;
#if NETSTANDARD2_0
if (customFontResolver == null)
{
throw new NotImplementedException("IFontResolver not implemented or not registered. Implement it and register in GlobalFontSettings.FontResolver");
}
#endif
if (customFontResolver != null)
{
// Case: Use custom font resolver.
fontResolverInfo = customFontResolver.ResolveTypeface(familyName, fontResolvingOptions.IsBold, fontResolvingOptions.IsItalic);
// If resolved by custom font resolver register info and font source.
if (fontResolverInfo != null && !(fontResolverInfo is PlatformFontResolverInfo))
{
// OverrideStyleSimulations is true only for internal quality tests.
if (fontResolvingOptions.OverrideStyleSimulations)
{
// Override style simulation returned by custom font resolver.
fontResolverInfo = new FontResolverInfo(fontResolverInfo.FaceName, fontResolvingOptions.MustSimulateBold, fontResolvingOptions.MustSimulateItalic, fontResolverInfo.CollectionNumber);
}
string resolverInfoKey = fontResolverInfo.Key;
FontResolverInfo existingFontResolverInfo;
if (FontResolverInfosByName.TryGetValue(resolverInfoKey, out existingFontResolverInfo))
{
// Case: A new typeface was resolved with the same info as a previous one.
// Discard new object an reuse previous one.
fontResolverInfo = existingFontResolverInfo;
// Associate with typeface key.
FontResolverInfosByName.Add(typefaceKey, fontResolverInfo);
#if DEBUG
// The font source should exist.
Debug.Assert(FontSourcesByName.ContainsKey(fontResolverInfo.FaceName));
#endif
}
else
{
// Case: No such font resolver info exists.
// Add to both dictionaries.
FontResolverInfosByName.Add(typefaceKey, fontResolverInfo);
Debug.Assert(resolverInfoKey == fontResolverInfo.Key);
FontResolverInfosByName.Add(resolverInfoKey, fontResolverInfo);
// Create font source if not yet exists.
XFontSource previousFontSource;
if (FontSourcesByName.TryGetValue(fontResolverInfo.FaceName, out previousFontSource))
{
// Case: The font source exists, because a previous font resolver info comes
// with the same face name, but was different in style simulation flags.
// Nothing to do.
}
else
{
// Case: Get font from custom font resolver and create font source.
byte[] bytes = customFontResolver.GetFont(fontResolverInfo.FaceName);
XFontSource fontSource = XFontSource.GetOrCreateFrom(bytes);
// Add font source's font resolver name if it is different to the face name.
if (string.Compare(fontResolverInfo.FaceName, fontSource.FontName, StringComparison.OrdinalIgnoreCase) != 0)
{
FontSourcesByName.Add(fontResolverInfo.FaceName, fontSource);
}
}
}
}
}
else
{
// Case: There was no custom font resolver set.
// Use platform font resolver.
// If it was successful resolver info and font source are cached
// automatically by PlatformFontResolver.ResolveTypeface.
fontResolverInfo = PlatformFontResolver.ResolveTypeface(familyName, fontResolvingOptions, typefaceKey);
}
// Return value is null if the typeface could not be resolved.
// In this case PDFsharp stops.
return(fontResolverInfo);
}
finally { Lock.ExitFontFactory(); }
}
public static bool TryGetFontResolverInfoByTypefaceKey(string typeFaceKey, out FontResolverInfo info)
{
return(FontResolverInfosByName.TryGetValue(typeFaceKey, out info));
}
//public static bool TryGetFontSourceByFaceName(string faceName, out XFontSource source)
//{
// return FontSourcesByName.TryGetValue(faceName, out source);
//}
internal static void CacheFontResolverInfo(string typefaceKey, FontResolverInfo fontResolverInfo)
{
FontResolverInfo existingfFontResolverInfo;
// Check whether identical font is already registered.
if (FontResolverInfosByName.TryGetValue(typefaceKey, out existingfFontResolverInfo))
{
// Should never come here.
throw new InvalidOperationException(string.Format("A font file with different content already exists with the specified face name '{0}'.", typefaceKey));
}
if (FontResolverInfosByName.TryGetValue(fontResolverInfo.Key, out existingfFontResolverInfo))
{
// Should never come here.
throw new InvalidOperationException(string.Format("A font resolver already exists with the specified key '{0}'.", fontResolverInfo.Key));
}
// Add to both dictionaries.
FontResolverInfosByName.Add(typefaceKey, fontResolverInfo);
FontResolverInfosByName.Add(fontResolverInfo.Key, fontResolverInfo);
}
public static bool TryGetFontResolverInfoByTypefaceKey(string typeFaceKey, out FontResolverInfo info)
{
return FontResolverInfosByName.TryGetValue(typeFaceKey, out info);
}
