/// <summary>
/// Returns the line spacing, in pixels, of this font. The line spacing is the vertical distance
/// between the base lines of two consecutive lines of text. Thus, the line spacing includes the
/// blank space between lines along with the height of the character itself.
/// </summary>
public double GetHeight()
{
double value = CellSpace * _emSize / UnitsPerEm;
#if CORE || NETFX_CORE || UWP
return(value);
#endif
#if GDI && !WPF
#if DEBUG_
double gdiValue = Font.GetHeight();
Debug.Assert(DoubleUtil.AreRoughlyEqual(gdiValue, value, 5));
#endif
return(value);
#endif
#if WPF && !GDI
return(value);
#endif
#if WPF && GDI // Testing only
return(value);
#endif
#if __IOS__ || __ANDROID__
return(value);
#endif
#if PORTABLE
return(0);
#endif
}
//// Methods
//public Font(Font prototype, FontStyle newStyle);
//public Font(FontFamily family, float emSize);
//public Font(string familyName, float emSize);
//public Font(FontFamily family, float emSize, FontStyle style);
//public Font(FontFamily family, float emSize, GraphicsUnit unit);
//public Font(string familyName, float emSize, FontStyle style);
//public Font(string familyName, float emSize, GraphicsUnit unit);
//public Font(FontFamily family, float emSize, FontStyle style, GraphicsUnit unit);
//public Font(string familyName, float emSize, FontStyle style, GraphicsUnit unit);
////public Font(FontFamily family, float emSize, FontStyle style, GraphicsUnit unit, byte gdiCharSet);
////public Font(string familyName, float emSize, FontStyle style, GraphicsUnit unit, byte gdiCharSet);
////public Font(FontFamily family, float emSize, FontStyle style, GraphicsUnit unit, byte gdiCharSet, bool gdiVerticalFont);
////public Font(string familyName, float emSize, FontStyle style, GraphicsUnit unit, byte gdiCharSet, bool gdiVerticalFont);
//public object Clone();
//private static FontFamily CreateFontFamilyWithFallback(string familyName);
//private void Dispose(bool disposing);
//public override bool Equals(object obj);
//protected override void Finalize();
//public static Font FromHdc(IntPtr hdc);
//public static Font FromHfont(IntPtr hfont);
//public static Font FromLogFont(object lf);
//public static Font FromLogFont(object lf, IntPtr hdc);
//public override int GetHashCode();
/// <summary>
/// Returns the line spacing, in pixels, of this font. The line spacing is the vertical distance
/// between the base lines of two consecutive lines of text. Thus, the line spacing includes the
/// blank space between lines along with the height of the character itself.
/// </summary>
public double GetHeight()
{
#if GDI
RealizeGdiFont();
double gdiValue = this.font.GetHeight();
#if DEBUG
float myValue = (float)(this.cellSpace * this.emSize / this.unitsPerEm);
//Debug.Assert(DoubleUtil.AreClose((float)value, myValue), "Check formula.");
Debug.Assert(DoubleUtil.AreRoughlyEqual(gdiValue, myValue, 5), "Check formula.");
//// 2355*(0.3/2048)*96 = 33.11719
//double myValue = this.cellSpace * (this.size / 72 / this.unitsPerEm) * 96;
//double myValue2 = (float)(this.cellSpace * (this.size / /*72 /*/ this.unitsPerEm) /* 72*/);
//Int64 i1 = (Int64)(value * 1000 + .5);
//Int64 i2 = (Int64)(myValue2 * 1000 + .5);
//Debug.Assert(i1 == i2, "??");
#endif
return(gdiValue);
#endif
#if WPF
double value = this.cellSpace * this.emSize / this.unitsPerEm;
return(value);
#endif
#if __IOS__
double value = this.cellSpace * this.emSize / this.unitsPerEm;
return(value);
#endif
}