private void CreateNativeFont(FontFamily familyName, float emSize, FontStyle style,
GraphicsUnit unit, byte gdiCharSet, bool gdiVerticalFont )
{
// convert to 96 Dpi to be consistent with Windows
var dpiSize = emSize * dpiScale;
try
{
nativeFont = new CTFont(familyName.NativeDescriptor,dpiSize);
}
catch
{
nativeFont = new CTFont("Helvetica",dpiSize);
}
CTFontSymbolicTraits tMask = CTFontSymbolicTraits.None;
if ((style & FontStyle.Bold) == FontStyle.Bold)
tMask |= CTFontSymbolicTraits.Bold;
if ((style & FontStyle.Italic) == FontStyle.Italic)
tMask |= CTFontSymbolicTraits.Italic;
strikeThrough = (style & FontStyle.Strikeout) == FontStyle.Strikeout;
underLine = (style & FontStyle.Underline) == FontStyle.Underline;
var nativeFont2 = nativeFont.WithSymbolicTraits(dpiSize,tMask,tMask);
if (nativeFont2 != null)
nativeFont = nativeFont2;
bold = (nativeFont.SymbolicTraits & CTFontSymbolicTraits.Bold) == CTFontSymbolicTraits.Bold;
italic = (nativeFont.SymbolicTraits & CTFontSymbolicTraits.Italic) == CTFontSymbolicTraits.Italic;
sizeInPoints = emSize;
this.unit = unit;
// FIXME
// I do not like the hard coded 72 but am just trying to boot strap the Font class right now
size = ConversionHelpers.GraphicsUnitConversion(GraphicsUnit.Point, unit, 72.0f, sizeInPoints);
}
static internal CTFont CreateFont (string familyName, float emSize, FontStyle style,
byte gdiCharSet, bool gdiVerticalFont )
{
if (emSize <= 0)
throw new ArgumentException("emSize is less than or equal to 0, evaluates to infinity, or is not a valid number.","emSize");
CTFont nativeFont;
// convert to 96 Dpi to be consistent with Windows
var dpiSize = emSize * dpiScale;
try {
nativeFont = new CTFont(familyName,dpiSize);
}
catch
{
nativeFont = new CTFont("Helvetica",dpiSize);
}
CTFontSymbolicTraits tMask = CTFontSymbolicTraits.None;
if ((style & FontStyle.Bold) == FontStyle.Bold)
tMask |= CTFontSymbolicTraits.Bold;
if ((style & FontStyle.Italic) == FontStyle.Italic)
tMask |= CTFontSymbolicTraits.Italic;
strikeThrough = (style & FontStyle.Strikeout) == FontStyle.Strikeout;
underLine = (style & FontStyle.Underline) == FontStyle.Underline;
var nativeFont2 = nativeFont.WithSymbolicTraits(dpiSize,tMask,tMask);
if (nativeFont2 != null)
nativeFont = nativeFont2;
return nativeFont;
}
private int GetNativeMetric(Metric metric, FontStyle style)
{
// we are going to actually have to create a font object here
// will not create an actual variable for this yet. We may
// want to do this in the future so that we do not have to keep
// creating it over and over again.
CTFontSymbolicTraits tMask = CTFontSymbolicTraits.None;
if ((style & FontStyle.Bold) == FontStyle.Bold)
tMask |= CTFontSymbolicTraits.Bold;
if ((style & FontStyle.Italic) == FontStyle.Italic)
tMask |= CTFontSymbolicTraits.Italic;
var font = new CTFont (nativeFontDescriptor,0);
font = font.WithSymbolicTraits (0, tMask, tMask);
switch (metric)
{
case Metric.EMHeight:
return (int)font.UnitsPerEmMetric;
case Metric.CellAscent:
return (int)Math.Round(font.AscentMetric / font.Size * font.UnitsPerEmMetric);
case Metric.CellDescent:
return (int)Math.Round(font.DescentMetric / font.Size * font.UnitsPerEmMetric);
case Metric.LineSpacing:
float lineHeight = 0;
lineHeight += font.AscentMetric;
lineHeight += font.DescentMetric;
lineHeight += font.LeadingMetric;
return (int)Math.Round(lineHeight / font.Size * font.UnitsPerEmMetric);
}
return 0;
}
private bool NativeStyleAvailable(FontStyle style)
{
// we are going to actually have to create a font object here
// will not create an actual variable for this yet. We may
// want to do this in the future so that we do not have to keep
// creating it over and over again.
var font = new CTFont (nativeFontDescriptor,0);
switch (style)
{
case FontStyle.Bold:
var tMaskBold = CTFontSymbolicTraits.None;
tMaskBold |= CTFontSymbolicTraits.Bold;
var bFont = font.WithSymbolicTraits (0, tMaskBold, tMaskBold);
if (bFont == null)
return false;
var bold = (bFont.SymbolicTraits & CTFontSymbolicTraits.Bold) == CTFontSymbolicTraits.Bold;
return bold;
case FontStyle.Italic:
//return (font.SymbolicTraits & CTFontSymbolicTraits.Italic) == CTFontSymbolicTraits.Italic;
var tMaskItalic = CTFontSymbolicTraits.None;
tMaskItalic |= CTFontSymbolicTraits.Italic;
var iFont = font.WithSymbolicTraits (0, tMaskItalic, tMaskItalic);
if (iFont == null)
return false;
var italic = (iFont.SymbolicTraits & CTFontSymbolicTraits.Italic) == CTFontSymbolicTraits.Italic;
return italic;
case FontStyle.Regular:
// Verify if this is correct somehow - we may need to add Bold here as well not sure
if ((font.SymbolicTraits & CTFontSymbolicTraits.Condensed) == CTFontSymbolicTraits.Condensed
|| (font.SymbolicTraits & CTFontSymbolicTraits.Expanded) == CTFontSymbolicTraits.Expanded)
return false;
else
return true;
case FontStyle.Underline:
return font.UnderlineThickness > 0;
case FontStyle.Strikeout:
// not implemented yet
return false;
}
return false;
}
public Font(string familyName, float emSize, FontStyle style,
GraphicsUnit unit, byte gdiCharSet, bool gdiVerticalFont )
{
if (emSize <= 0)
throw new ArgumentException("emSize is less than or equal to 0, evaluates to infinity, or is not a valid number.","emSize");
// convert to 96 Dpi to be consistent with Windows
var dpiSize = emSize * dpiScale;
try {
nativeFont = new CTFont(familyName,dpiSize);
}
catch
{
//nativeFont = new CTFont("Lucida Grande",emSize);
nativeFont = new CTFont("Helvetica",dpiSize);
}
CTFontSymbolicTraits tMask = CTFontSymbolicTraits.None;
if ((style & FontStyle.Bold) == FontStyle.Bold)
tMask |= CTFontSymbolicTraits.Bold;
if ((style & FontStyle.Italic) == FontStyle.Italic)
tMask |= CTFontSymbolicTraits.Italic;
strikeThrough = (style & FontStyle.Strikeout) == FontStyle.Strikeout;
underLine = (style & FontStyle.Underline) == FontStyle.Underline;
var nativeFont2 = nativeFont.WithSymbolicTraits(dpiSize,tMask,tMask);
if (nativeFont2 != null)
nativeFont = nativeFont2;
sizeInPoints = emSize;
this.unit = unit;
// FIXME
// I do not like the hard coded 72 but am just trying to boot strap the Font class right now
size = ConversionHelpers.GraphicsUnitConversion(GraphicsUnit.Point, unit, 72.0f, sizeInPoints);
}
