/// <summary>
/// Code separated from Metric getter to make code easier to debug.
/// (Setup properties in their getters caused side effects during debugging because Visual Studio calls a getter
/// to early to show its value in a debugger window.)
/// </summary>
void CreateDescriptorAndInitializeFontMetrics() // TODO: refactor
{
Debug.Assert(_fontMetrics == null, "InitializeFontMetrics() was already called.");
_descriptor = (OpenTypeDescriptor)FontDescriptorCache.GetOrCreateDescriptorFor(this); //_familyName, _style, _glyphTypeface.Fontface);
_fontMetrics = new XFontMetrics(_descriptor.FontName, _descriptor.UnitsPerEm, _descriptor.Ascender, _descriptor.Descender,
_descriptor.Leading, _descriptor.LineSpacing, _descriptor.CapHeight, _descriptor.XHeight, _descriptor.StemV, 0, 0, 0,
_descriptor.UnderlinePosition, _descriptor.UnderlineThickness, _descriptor.StrikeoutPosition, _descriptor.StrikeoutSize);
XFontMetrics fm = Metrics;
// Already done in CreateDescriptorAndInitializeFontMetrics.
//if (_descriptor == null)
// _descriptor = (OpenTypeDescriptor)FontDescriptorStock.Global.CreateDescriptor(this); //(Name, (XGdiFontStyle)Font.Style);
UnitsPerEm = _descriptor.UnitsPerEm;
CellAscent = _descriptor.Ascender;
CellDescent = _descriptor.Descender;
CellSpace = _descriptor.LineSpacing;
#if DEBUG_ && GDI
int gdiValueUnitsPerEm = Font.FontFamily.GetEmHeight(Font.Style);
Debug.Assert(gdiValueUnitsPerEm == UnitsPerEm);
int gdiValueAscent = Font.FontFamily.GetCellAscent(Font.Style);
Debug.Assert(gdiValueAscent == CellAscent);
int gdiValueDescent = Font.FontFamily.GetCellDescent(Font.Style);
Debug.Assert(gdiValueDescent == CellDescent);
int gdiValueLineSpacing = Font.FontFamily.GetLineSpacing(Font.Style);
Debug.Assert(gdiValueLineSpacing == CellSpace);
#endif
#if DEBUG_ && WPF && !SILVERLIGHT
int wpfValueLineSpacing = (int)Math.Round(Family.LineSpacing * _descriptor.UnitsPerEm);
Debug.Assert(wpfValueLineSpacing == CellSpace);
#endif
Debug.Assert(fm.UnitsPerEm == _descriptor.UnitsPerEm);
}
public static int GetWpfValue(XFontFamily family, XFontStyle style, GWV value)
{
FontDescriptor descriptor = FontDescriptorStock.Global.CreateDescriptor(family, style);
XFontMetrics metrics = descriptor.FontMetrics;
switch (value)
{
case GWV.GetCellAscent:
return(metrics.Ascent);
case GWV.GetCellDescent:
return(Math.Abs(metrics.Descent));
case GWV.GetEmHeight:
//return (int)metrics.CapHeight;
return(metrics.UnitsPerEm);
case GWV.GetLineSpacing:
return(metrics.Ascent + Math.Abs(metrics.Descent) + metrics.Leading);
default:
throw new InvalidOperationException("Unknown GWV value.");
// DELETE
//case GWV.IsStyleAvailable:
// style &= XFontStyle.Regular | XFontStyle.Bold | XFontStyle.Italic | XFontStyle.BoldItalic; // same as XFontStyle.BoldItalic
// List<Typeface> s_typefaces = new List<Typeface>(family.wpfFamily.GetTypefaces());
// foreach (Typeface typeface in s_typefaces)
// {
// }
// Debugger.Break();
////typeface.Style = FontStyles.
}
}
/// <summary>
/// Determines whether the style is available as a glyph type face in the specified font family, i.e. the specified style is not simulated.
/// </summary>
public static bool IsStyleAvailable(XFontFamily family, XFontStyle style)
{
#if !SILVERLIGHT
// TODOWPF: check for correctness
FontDescriptor descriptor = FontDescriptorStock.Global.CreateDescriptor(family, style);
XFontMetrics metrics = descriptor.FontMetrics;
style &= XFontStyle.Regular | XFontStyle.Bold | XFontStyle.Italic | XFontStyle.BoldItalic; // same as XFontStyle.BoldItalic
List <Typeface> typefaces = new List <Typeface>(family.wpfFamily.GetTypefaces());
foreach (Typeface typeface in typefaces)
{
bool available = false;
GlyphTypeface glyphTypeface;
if (typeface.TryGetGlyphTypeface(out glyphTypeface))
{
#if DEBUG
glyphTypeface.GetType();
#endif
available = true;
}
#if DEBUG_ //
int weightClass = typeface.Weight.ToOpenTypeWeight();
switch (style)
{
case XFontStyle.Regular:
//if (typeface.TryGetGlyphTypeface(.Style == FontStyles.Normal && typeface.Weight== FontWeights.Normal.)
break;
case XFontStyle.Bold:
break;
case XFontStyle.Italic:
break;
case XFontStyle.BoldItalic:
break;
}
#endif
if (available)
{
return(true);
}
}
return(false);
#else
return(true); // AGHACK
#endif
}
/// <summary>
/// Code separated from Metric getter to make code easier to debug.
/// (Setup properties in their getters caused side effects during debugging because Visual Studio calls a getter
/// to early to show its value in a debugger window.)
/// </summary>
void CreateDescriptorAndInitializeFontMetrics() // TODO: refactor
{
Debug.Assert(_fontMetrics == null, "InitializeFontMetrics() was already called.");
Descriptor = (OpenTypeDescriptor)FontDescriptorCache.GetOrCreateDescriptorFor(this); //_familyName, _style, _glyphTypeface.Fontface);
_fontMetrics = new XFontMetrics(Descriptor.FontName, Descriptor.UnitsPerEm, Descriptor.Ascender, Descriptor.Descender,
Descriptor.Leading, Descriptor.LineSpacing, Descriptor.CapHeight, Descriptor.XHeight, Descriptor.StemV, 0, 0, 0,
Descriptor.UnderlinePosition, Descriptor.UnderlineThickness, Descriptor.StrikeoutPosition, Descriptor.StrikeoutSize);
XFontMetrics fm = Metrics;
// Already done in CreateDescriptorAndInitializeFontMetrics.
//if (Descriptor == null)
// Descriptor = (OpenTypeDescriptor)FontDescriptorStock.Global.CreateDescriptor(this); //(Name, (XGdiFontStyle)Font.Style);
UnitsPerEm = Descriptor.UnitsPerEm;
CellAscent = Descriptor.Ascender;
CellDescent = Descriptor.Descender;
CellSpace = Descriptor.LineSpacing;
Debug.Assert(fm.UnitsPerEm == Descriptor.UnitsPerEm);
}
/// <summary>
/// Connects the specifications of a font from XFont to a real glyph type face.
/// </summary>
void Initialize()
{
XFontMetrics fm = null;
#if DEBUG___
FontData[] fontDataArray = FontDataStock.Global.GetFontDataList();
if (fontDataArray.Length > 0)
{
//// GetType();
////#if GDI
//// var x = XPrivateFontCollection.global.GlobalPrivateFontCollection;
//// families = x.Families;
//// bool fff = families[0].IsStyleAvailable(System.Drawing.FontStyle.Regular);
//// fff.GetType();
//// this.font = new Font(families[0].Name, 12, System.Drawing.FontStyle.Regular, GraphicsUnit.Pixel);
//// this.font = new Font("Oblivious", 12, System.Drawing.FontStyle.Regular, GraphicsUnit.Pixel);
//// this.font = new Font(families[0], 12, System.Drawing.FontStyle.Regular, GraphicsUnit.Pixel);
//// System.Drawing.FontFamily f = new System.Drawing.FontFamily(families[0].Name);
//// f.GetType();
////#endif
}
#endif
#if GDI
if (this.font == null)
{
if (this.gdifamily != null)
{
this.font = new Font(this.gdifamily, (float)this.emSize, (System.Drawing.FontStyle) this.style, GraphicsUnit.World);
this.familyName = this.gdifamily.Name; // Do we need this???
}
else
{
// First check private fonts
this.font = XPrivateFontCollection.TryFindPrivateFont(this.familyName, this.emSize, (System.Drawing.FontStyle) this.style) ??
new Font(this.familyName, (float)this.emSize, (System.Drawing.FontStyle) this.style, GraphicsUnit.World);
}
#if DEBUG
// new Font returns MSSansSerif if the requested font was not found ...
//Debug.Assert(this.familyName == this.font.FontFamily.Name);
#endif
}
fm = Metrics;
System.Drawing.FontFamily fontFamily = this.font.FontFamily;
this.unitsPerEm = fm.UnitsPerEm;
System.Drawing.FontFamily fontFamily2 = this.font.FontFamily;
this.cellSpace = fontFamily2.GetLineSpacing(font.Style);
//Debug.Assert(this.cellSpace == fm.Ascent + Math.Abs(fm.Descent) + fm.Leading, "Value differs from information retrieved from font image.");
this.cellAscent = fontFamily.GetCellAscent(font.Style);
#pragma warning disable 1030
#warning delTHHO
//!!!delTHHO 14.08.2008 Debug.Assert(this.cellAscent == fm.Ascent, "Value differs from information retrieved from font image.");
//Debug.Assert(this.cellAscent == fm.Ascent, "Value differs from information retrieved from font image.");
this.cellDescent = fontFamily.GetCellDescent(font.Style);
#if DEBUG
int desc = Math.Abs(fm.Descent);
if (this.cellDescent != desc)
{
Debug.Assert(false, "Value differs from information retrieved from font image.");
}
#endif
#endif
#if WPF
#if !SILVERLIGHT
if (this.family == null)
{
Debug.Assert(this.typeface == null);
this.typeface = XPrivateFontCollection.TryFindTypeface(Name, this.style, out this.family);
#if true
if (this.typeface != null)
{
GlyphTypeface glyphTypeface;
ICollection <Typeface> list = this.family.GetTypefaces();
foreach (Typeface tf in list)
{
if (!tf.TryGetGlyphTypeface(out glyphTypeface))
{
Debugger.Break();
}
}
if (!this.typeface.TryGetGlyphTypeface(out glyphTypeface))
{
throw new InvalidOperationException(PSSR.CannotGetGlyphTypeface(Name));
}
}
#endif
}
if (this.family == null)
{
this.family = new System.Windows.Media.FontFamily(Name);
}
if (typeface == null)
{
this.typeface = FontHelper.CreateTypeface(this.family, style);
}
fm = Metrics;
Debug.Assert(this.unitsPerEm == 0 || this.unitsPerEm == fm.UnitsPerEm);
this.unitsPerEm = fm.UnitsPerEm;
//Debug.Assert(this.cellSpace == 0 || this.cellSpace == fm.Ascent + Math.Abs(fm.Descent) + fm.Leading);
this.cellSpace = fm.Ascent + Math.Abs(fm.Descent) + fm.Leading;
Debug.Assert(this.cellAscent == 0 || this.cellAscent == fm.Ascent);
this.cellAscent = fm.Ascent;
Debug.Assert(this.cellDescent == 0 || this.cellDescent == Math.Abs(fm.Descent));
this.cellDescent = Math.Abs(fm.Descent);
#else
if (fm != null)
{
fm.GetType();
}
#endif
#endif
}
/// <summary>
/// Code separated from Metric getter to make code easier to debug.
/// (Setup properties in their getters caused side effects during debugging because Visual Studio calls a getter
/// to early to show its value in a debugger window.)
/// </summary>
void CreateDescriptorAndInitializeFontMetrics() // TODO: refactor
{
Debug.Assert(_fontMetrics == null, "InitializeFontMetrics() was already called.");
_descriptor = (OpenTypeDescriptor)FontDescriptorCache.GetOrCreateDescriptorFor(this); //_familyName, _style, _glyphTypeface.Fontface);
_fontMetrics = new XFontMetrics(_descriptor.FontName, _descriptor.UnitsPerEm, _descriptor.Ascender, _descriptor.Descender,
_descriptor.Leading, _descriptor.LineSpacing, _descriptor.CapHeight, _descriptor.XHeight, _descriptor.StemV, 0, 0, 0,
_descriptor.UnderlinePosition, _descriptor.UnderlineThickness, _descriptor.StrikeoutPosition, _descriptor.StrikeoutSize);
XFontMetrics fm = Metrics;
// Already done in CreateDescriptorAndInitializeFontMetrics.
//if (_descriptor == null)
// _descriptor = (OpenTypeDescriptor)FontDescriptorStock.Global.CreateDescriptor(this); //(Name, (XGdiFontStyle)Font.Style);
UnitsPerEm = _descriptor.UnitsPerEm;
CellAscent = _descriptor.Ascender;
CellDescent = _descriptor.Descender;
CellSpace = _descriptor.LineSpacing;
#if DEBUG_ && GDI
int gdiValueUnitsPerEm = Font.FontFamily.GetEmHeight(Font.Style);
Debug.Assert(gdiValueUnitsPerEm == UnitsPerEm);
int gdiValueAscent = Font.FontFamily.GetCellAscent(Font.Style);
Debug.Assert(gdiValueAscent == CellAscent);
int gdiValueDescent = Font.FontFamily.GetCellDescent(Font.Style);
Debug.Assert(gdiValueDescent == CellDescent);
int gdiValueLineSpacing = Font.FontFamily.GetLineSpacing(Font.Style);
Debug.Assert(gdiValueLineSpacing == CellSpace);
#endif
#if DEBUG_ && WPF && !SILVERLIGHT
int wpfValueLineSpacing = (int)Math.Round(Family.LineSpacing * _descriptor.UnitsPerEm);
Debug.Assert(wpfValueLineSpacing == CellSpace);
#endif
Debug.Assert(fm.UnitsPerEm == _descriptor.UnitsPerEm);
}
