private static object GetSuperscript(ITextFont font)
{
TomBool super = font.Superscript;
if (super == TomBool.tomUndefined)
{
return TextPattern.MixedAttributeValue;
}
else
{
return super == TomBool.tomTrue;
}
}
private static object GetUnderlineStyle(ITextFont font)
{
// note: if a range spans different underline styles then it won't return tomUndefined. instead it appears
// to return the underline style at the endpoint. if a range spans underlined and non-underlined text then
// it returns tomUndefined properly.
TomUnderline underline = font.Underline;
if (underline == TomUnderline.tomUndefined)
{
return TextPattern.MixedAttributeValue;
}
else
{
switch (underline)
{
case TomUnderline.tomTrue:
return TextDecorationLineStyle.Single;
default:
// TextDecorationLineStyle enum matches TomUnderline enum
return (TextDecorationLineStyle)(int)underline;
}
}
}
private object GetReadOnly(ITextFont font)
{
// if the entire pattern is read-only then every range within it is also
// read only.
if (_pattern.ReadOnly)
{
return true;
}
// check if the "Protected" font style is turned on.
TomBool protect = font.Protected;
if (protect == TomBool.tomUndefined)
{
return TextPattern.MixedAttributeValue;
}
else
{
return protect == TomBool.tomTrue;
}
}
private static object GetStrikethroughStyle(ITextFont font)
{
TomBool strike = font.StrikeThrough;
if (strike == TomBool.tomUndefined)
{
return TextPattern.MixedAttributeValue;
}
else
{
return strike == TomBool.tomTrue ? TextDecorationLineStyle.Single : TextDecorationLineStyle.None;
}
}
private static object GetItalic(ITextFont font)
{
TomBool italic = font.Italic;
if (italic == TomBool.tomUndefined)
{
return TextPattern.MixedAttributeValue;
}
else
{
return italic == TomBool.tomTrue;
}
}
private static object GetOutlineStyles(ITextFont font)
{
TomBool outline = font.Outline;
TomBool shadow = font.Shadow;
TomBool emboss = font.Emboss;
TomBool engrave = font.Engrave;
if (outline == TomBool.tomUndefined || shadow == TomBool.tomUndefined || emboss == TomBool.tomUndefined || engrave == TomBool.tomUndefined)
{
return TextPattern.MixedAttributeValue;
}
else
{
OutlineStyles style = 0;
style |= (outline == TomBool.tomTrue) ? OutlineStyles.Outline : 0;
style |= (shadow == TomBool.tomTrue) ? OutlineStyles.Shadow : 0;
style |= (emboss == TomBool.tomTrue) ? OutlineStyles.Embossed : 0;
style |= (engrave == TomBool.tomTrue) ? OutlineStyles.Engraved : 0;
return style;
}
}
private static object GetForegroundColor(ITextFont font)
{
int color = font.ForeColor;
switch (color)
{
case (int)TomConst.tomAutocolor:
// tomAutocolor means richedit is using the default system foreground color.
// review: if RichEdit sends a WM_CTLCOLOR message to it's parent then the
// text color can depend on whatever foreground color the parent supplies.
return SafeNativeMethods.GetSysColor(NativeMethods.COLOR_WINDOWTEXT);
case (int)TomConst.tomUndefined:
return TextPattern.MixedAttributeValue;
default:
// if the high-byte is zero then we have a COLORREF
if ((color & 0xff000000) == 0)
{
return color;
}
else
{
// we have a PALETTEINDEX color
return AutomationElement.NotSupported;
}
}
}
private static object GetHidden(ITextFont font)
{
TomBool hidden = font.Hidden;
if (hidden == TomBool.tomUndefined)
{
return TextPattern.MixedAttributeValue;
}
else
{
return hidden == TomBool.tomTrue;
}
}
private static object GetFontWeight(ITextFont font)
{
int weight = font.Weight;
if (weight == (int)TomConst.tomUndefined)
{
return TextPattern.MixedAttributeValue;
}
else
{
return weight;
}
}
private static object GetFontSize(ITextFont font)
{
float size = font.Size;
if ((TomConst)size == TomConst.tomUndefined)
{
return TextPattern.MixedAttributeValue;
}
else
{
return (double)size;
}
}
private static object GetCapStyle(ITextFont font)
{
TomBool allCaps = font.AllCaps;
TomBool smallCaps = font.SmallCaps;
if (allCaps == TomBool.tomUndefined || smallCaps == TomBool.tomUndefined)
{
return TextPattern.MixedAttributeValue;
}
else
{
// note: AllCaps and SmallCaps are mutually exclusive.
if (font.AllCaps == TomBool.tomTrue)
{
return CapStyle.AllCap;
}
else if (font.SmallCaps == TomBool.tomTrue)
{
return CapStyle.SmallCap;
}
else
{
return CapStyle.None;
}
}
}
private static object GetAnimationStyle(ITextFont font)
{
TomAnimation anim = font.Animation;
if (anim == TomAnimation.tomUndefined)
{
return TextPattern.MixedAttributeValue;
}
else
{
// the AnimationStyle enum matches the TomAnimation enum
return (AnimationStyle)(int)anim;
}
}
internal RichTextFont(ITextFont font)
{
_font = font;
}
