/// <summary>
/// Renders the <see cref="Duality.Resources.Font"/> based on its embedded TrueType representation.
/// <param name="extendedSet">Extended set of characters for renderning.</param>
/// </summary>
private RenderedFontData RenderGlyphs(byte[] trueTypeFontData, float emSize, FontStyle style, FontCharSet extendedSet, bool antialiasing, bool monospace)
{
if (this.fontManagers == null)
{
this.fontManagers = new Dictionary <int, PrivateFontCollection>();
}
// Allocate one PrivateFontCollection for each embedded TrueType Font
// This is an unfortunate requirement to keep track of which Font is which,
// since a byte[] doesn't give it away, and a Font collection won't tell us
// which one we just added.
PrivateFontCollection manager;
int fontId = trueTypeFontData.GetHashCode();
if (!this.fontManagers.TryGetValue(fontId, out manager))
{
manager = new PrivateFontCollection();
this.fontManagers.Add(fontId, manager);
}
// Load custom font family using System.Drawing
if (manager.Families.Length == 0)
{
IntPtr fontBuffer = Marshal.AllocCoTaskMem(trueTypeFontData.Length);
Marshal.Copy(trueTypeFontData, 0, fontBuffer, trueTypeFontData.Length);
manager.AddMemoryFont(fontBuffer, trueTypeFontData.Length);
}
// Render the font's glyphs
return(this.RenderGlyphs(
manager.Families.FirstOrDefault(),
emSize,
style,
extendedSet,
antialiasing,
monospace));
// Yes, we have a minor memory leak here - both the Font buffer and the private
// Font collection. Unfortunately though, GDI+ won't let us dispose them
// properly due to aggressive Font caching, see here:
//
// http://stackoverflow.com/questions/25583394/privatefontcollection-addmemoryfont-producing-random-errors-on-windows-server-20
//
// "Standard GDI+ lossage, disposing a Font does not actually destroy it.
// It gets put back into a cache, with the assumption that it will be used again.
// An important perf optimization, creating fonts is pretty expensive. That ends
// poorly for private fonts when you destroy their home, the font will use
// released memory. Producing bewildering results, including hard crashes. You'll
// need to keep the collection around, as well as the IntPtr."
// – Hans Passant Aug 30 '14 at 16:13
}
/// <summary>
/// Renders the <see cref="Duality.Resources.Font"/> using the specified system font family.
/// </summary>
private RenderedFontData RenderGlyphs(FontFamily fontFamily, float emSize, FontStyle style, FontCharSet extendedSet, bool antialiasing, bool monospace)
{
// Determine System.Drawing font style
SysDrawFontStyle systemStyle = SysDrawFontStyle.Regular;
if (style.HasFlag(FontStyle.Bold))
{
systemStyle |= SysDrawFontStyle.Bold;
}
if (style.HasFlag(FontStyle.Italic))
{
systemStyle |= SysDrawFontStyle.Italic;
}
// Create a System.Drawing font
SysDrawFont internalFont = null;
if (fontFamily != null)
{
try { internalFont = new SysDrawFont(fontFamily, emSize, systemStyle); }
catch (Exception e)
{
Log.Editor.WriteError(
"Failed to create System Font '{1} {2}, {3}' for rendering Duality Font glyphs: {0}",
Log.Exception(e),
fontFamily.Name,
emSize,
style);
}
}
// If creating the font failed, fall back to a default one
if (internalFont == null)
{
internalFont = new SysDrawFont(FontFamily.GenericMonospace, emSize, systemStyle);
}
// Render the font's glyphs
using (internalFont)
{
return(this.RenderGlyphs(
internalFont,
FontCharSet.Default.MergedWith(extendedSet),
antialiasing,
monospace));
}
}
public void Import(IAssetImportEnvironment env)
{
// Handle all available input. No need to filter or ask for this anymore, as
// the preparation step already made a selection with AcceptsInput. We won't
// get any input here that didn't match.
foreach (AssetImportInput input in env.Input)
{
// Request a target Resource with a name matching the input
ContentRef <DualityFont> targetRef = env.GetOutput <DualityFont>(input.AssetName);
// If we successfully acquired one, proceed with the import
if (targetRef.IsAvailable)
{
DualityFont target = targetRef.Res;
// Retrieve import parameters
float size = env.GetOrInitParameter(targetRef, "Size", 16.0f);
FontStyle style = env.GetOrInitParameter(targetRef, "Style", FontStyle.Regular);
string extendedCharSet = env.GetOrInitParameter(targetRef, "ExtendedCharSet", string.Empty);
bool antialiasing = env.GetOrInitParameter(targetRef, "AntiAlias", true);
bool monospace = env.GetOrInitParameter(targetRef, "Monospace", false);
// Load the TrueType Font and render all the required glyphs
byte[] trueTypeData = File.ReadAllBytes(input.Path);
RenderedFontData fontData = this.RenderGlyphs(
trueTypeData,
size,
style,
!string.IsNullOrEmpty(extendedCharSet) ? new FontCharSet(extendedCharSet) : null,
antialiasing,
monospace);
// Transfer our rendered Font data to the Font Resource
target.SetGlyphData(
fontData.Bitmap,
fontData.Atlas,
fontData.GlyphData,
fontData.Metrics);
// Add the requested output to signal that we've done something with it
env.AddOutput(targetRef, input.Path);
}
}
}
public void Import(IAssetImportEnvironment env)
{
// Handle all available input. No need to filter or ask for this anymore, as
// the preparation step already made a selection with AcceptsInput. We won't
// get any input here that didn't match.
foreach (AssetImportInput input in env.Input)
{
// Request a target Resource with a name matching the input
ContentRef <DualityFont> targetRef = env.GetOutput <DualityFont>(input.AssetName);
// If we successfully acquired one, proceed with the import
if (targetRef.IsAvailable)
{
DualityFont target = targetRef.Res;
// Retrieve import parameters
float size = env.GetOrInitParameter(targetRef, "Size", 16.0f);
FontStyle style = env.GetOrInitParameter(targetRef, "Style", FontStyle.Regular);
string customCharSet = env.GetOrInitParameter(targetRef, "CustomCharSet", string.Empty);
List <UnicodeBlock> unicodeBlocks = env.GetOrInitParameter(targetRef, "UnicodeBlocks", new List <UnicodeBlock>(DefaultBlocks));
bool antialiasing = env.GetOrInitParameter(targetRef, "AntiAlias", true);
bool monospace = env.GetOrInitParameter(targetRef, "Monospace", false);
HashSet <char> fullCharSet = new HashSet <char>();
if (!string.IsNullOrWhiteSpace(customCharSet))
{
string[] blocks = customCharSet.Split(',');
ulong start = 0;
ulong end = 0;
foreach (string block in blocks)
{
string[] limits = block.Split(new[] { '-' }, 3);
if (!ulong.TryParse(limits[0], NumberStyles.HexNumber, null, out start))
{
Log.Editor.WriteError("Cannot parse value " + limits[0] + "; CustomCharSet will be ignored. Please verify the value and repeat the import.");
}
if (limits.Length == 1)
{
end = start;
}
else
{
if (limits.Length == 2 && !ulong.TryParse(limits[1], NumberStyles.HexNumber, null, out end))
{
Log.Editor.WriteError("Cannot parse value " + limits[1] + "; CustomCharSet will be ignored. Please verify the value and repeat the import.");
}
else if (limits.Length > 2)
{
Log.Editor.WriteError("Unexpected values " + limits[2] + " in range " + block + " will be ignored. Please verify the value and repeat the import.");
}
if (start > end)
{
Log.Editor.WriteWarning(start + " is bigger than " + end + "; block will be ignored. Please verify the value and repeat the import.");
}
}
for (char c = (char)start; c <= (char)end; c++)
{
if (!char.IsControl(c))
{
fullCharSet.Add(c);
}
}
}
}
if (unicodeBlocks != null)
{
Type unicodeBlockType = typeof(UnicodeBlock);
Type unicodeRangeAttrType = typeof(UnicodeRangeAttribute);
foreach (UnicodeBlock block in unicodeBlocks)
{
UnicodeRangeAttribute range = unicodeBlockType.GetMember(block.ToString())
.First()
.GetCustomAttributes(unicodeRangeAttrType, false)
.FirstOrDefault() as UnicodeRangeAttribute;
if (range != null)
{
for (char c = (char)range.CharStart; c <= (char)range.CharEnd; c++)
{
if (!char.IsControl(c))
{
fullCharSet.Add(c);
}
}
}
}
}
// Load the TrueType Font and render all the required glyphs
byte[] trueTypeData = File.ReadAllBytes(input.Path);
RenderedFontData fontData = this.RenderGlyphs(
trueTypeData,
size,
style,
new FontCharSet(new string(fullCharSet.ToArray())),
antialiasing,
monospace);
// Transfer our rendered Font data to the Font Resource
target.SetGlyphData(
fontData.Bitmap,
fontData.Atlas,
fontData.GlyphData,
fontData.Metrics);
// Add the requested output to signal that we've done something with it
env.AddOutput(targetRef, input.Path);
}
}
}
protected override void ImportResource(ContentRef <DualityFont> resourceRef, AssetImportInput input, IAssetImportEnvironment env)
{
DualityFont resource = resourceRef.Res;
// Retrieve import parameters
float size = env.GetOrInitParameter(resourceRef, "Size", 16.0f);
FontStyle style = env.GetOrInitParameter(resourceRef, "Style", FontStyle.Regular);
string customCharSet = env.GetOrInitParameter(resourceRef, "CustomCharSet", string.Empty);
List <UnicodeBlock> unicodeBlocks = env.GetOrInitParameter(resourceRef, "UnicodeBlocks", new List <UnicodeBlock>(DefaultBlocks));
bool antialiasing = env.GetOrInitParameter(resourceRef, "AntiAlias", true);
bool monospace = env.GetOrInitParameter(resourceRef, "Monospace", false);
HashSet <char> fullCharSet = new HashSet <char>();
if (!string.IsNullOrWhiteSpace(customCharSet))
{
string[] blocks = customCharSet.Split(',');
ulong start = 0;
ulong end = 0;
foreach (string block in blocks)
{
string[] limits = block.Split(new[] { '-' }, 3);
if (!ulong.TryParse(limits[0], NumberStyles.HexNumber, null, out start))
{
Log.Editor.WriteError("Cannot parse value " + limits[0] + "; CustomCharSet will be ignored. Please verify the value and repeat the import.");
}
if (limits.Length == 1)
{
end = start;
}
else
{
if (limits.Length == 2 && !ulong.TryParse(limits[1], NumberStyles.HexNumber, null, out end))
{
Log.Editor.WriteError("Cannot parse value " + limits[1] + "; CustomCharSet will be ignored. Please verify the value and repeat the import.");
}
else if (limits.Length > 2)
{
Log.Editor.WriteError("Unexpected values " + limits[2] + " in range " + block + " will be ignored. Please verify the value and repeat the import.");
}
if (start > end)
{
Log.Editor.WriteWarning(start + " is bigger than " + end + "; block will be ignored. Please verify the value and repeat the import.");
}
}
for (char c = (char)start; c <= (char)end; c++)
{
if (!char.IsControl(c))
{
fullCharSet.Add(c);
}
}
}
}
if (unicodeBlocks != null)
{
Type unicodeBlockType = typeof(UnicodeBlock);
Type unicodeRangeAttrType = typeof(UnicodeRangeAttribute);
foreach (UnicodeBlock block in unicodeBlocks)
{
UnicodeRangeAttribute range = unicodeBlockType.GetMember(block.ToString())
.First()
.GetCustomAttributes(unicodeRangeAttrType, false)
.FirstOrDefault() as UnicodeRangeAttribute;
if (range != null)
{
for (char c = (char)range.CharStart; c <= (char)range.CharEnd; c++)
{
if (!char.IsControl(c))
{
fullCharSet.Add(c);
}
}
}
}
}
// Load the TrueType Font and render all the required glyphs
byte[] trueTypeData = File.ReadAllBytes(input.Path);
RenderedFontData fontData = this.RenderGlyphs(
trueTypeData,
size,
style,
new FontCharSet(new string(fullCharSet.ToArray())),
antialiasing,
monospace);
// Transfer our rendered Font data to the Font Resource
resource.SetGlyphData(
fontData.Bitmap,
fontData.Atlas,
fontData.GlyphData,
fontData.Metrics);
}
/// <summary>
/// Renders the <see cref="Duality.Resources.Font"/> using the specified system font family.
/// </summary>
private RenderedFontData RenderGlyphs(FontFamily fontFamily, float emSize, FontStyle style, FontCharSet extendedSet, bool antialiasing, bool monospace)
{
// Determine System.Drawing font style
SysDrawFontStyle systemStyle = SysDrawFontStyle.Regular;
if (style.HasFlag(FontStyle.Bold)) systemStyle |= SysDrawFontStyle.Bold;
if (style.HasFlag(FontStyle.Italic)) systemStyle |= SysDrawFontStyle.Italic;
// Create a System.Drawing font
SysDrawFont internalFont = null;
if (fontFamily != null)
{
try { internalFont = new SysDrawFont(fontFamily, emSize, systemStyle); }
catch (Exception e)
{
Log.Editor.WriteError(
"Failed to create System Font '{1} {2}, {3}' for rendering Duality Font glyphs: {0}",
Log.Exception(e),
fontFamily.Name,
emSize,
style);
}
}
// If creating the font failed, fall back to a default one
if (internalFont == null)
internalFont = new SysDrawFont(FontFamily.GenericMonospace, emSize, systemStyle);
// Render the font's glyphs
using (internalFont)
{
return this.RenderGlyphs(
internalFont,
FontCharSet.Default.MergedWith(extendedSet),
antialiasing,
monospace);
}
}
/// <summary>
/// Renders the <see cref="Duality.Resources.Font"/> based on its embedded TrueType representation.
/// <param name="extendedSet">Extended set of characters for renderning.</param>
/// </summary>
private RenderedFontData RenderGlyphs(byte[] trueTypeFontData, float emSize, FontStyle style, FontCharSet extendedSet, bool antialiasing, bool monospace)
{
if (this.fontManagers == null)
this.fontManagers = new Dictionary<int, PrivateFontCollection>();
// Allocate one PrivateFontCollection for each embedded TrueType Font
// This is an unfortunate requirement to keep track of which Font is which,
// since a byte[] doesn't give it away, and a Font collection won't tell us
// which one we just added.
PrivateFontCollection manager;
int fontId = trueTypeFontData.GetHashCode();
if (!this.fontManagers.TryGetValue(fontId, out manager))
{
manager = new PrivateFontCollection();
this.fontManagers.Add(fontId, manager);
}
// Load custom font family using System.Drawing
if (manager.Families.Length == 0)
{
IntPtr fontBuffer = Marshal.AllocCoTaskMem(trueTypeFontData.Length);
Marshal.Copy(trueTypeFontData, 0, fontBuffer, trueTypeFontData.Length);
manager.AddMemoryFont(fontBuffer, trueTypeFontData.Length);
}
// Render the font's glyphs
return this.RenderGlyphs(
manager.Families.FirstOrDefault(),
emSize,
style,
extendedSet,
antialiasing,
monospace);
// Yes, we have a minor memory leak here - both the Font buffer and the private
// Font collection. Unfortunately though, GDI+ won't let us dispose them
// properly due to aggressive Font caching, see here:
//
// http://stackoverflow.com/questions/25583394/privatefontcollection-addmemoryfont-producing-random-errors-on-windows-server-20
//
// "Standard GDI+ lossage, disposing a Font does not actually destroy it.
// It gets put back into a cache, with the assumption that it will be used again.
// An important perf optimization, creating fonts is pretty expensive. That ends
// poorly for private fonts when you destroy their home, the font will use
// released memory. Producing bewildering results, including hard crashes. You'll
// need to keep the collection around, as well as the IntPtr."
// – Hans Passant Aug 30 '14 at 16:13
}
