/// <summary>
/// Gets the white space width of the specified box
/// </summary>
/// <param name="g"></param>
/// <param name="box"></param>
/// <returns></returns>
public static double WhiteSpace(RGraphics g, CssBoxProperties box)
{
double w = box.ActualFont.GetWhitespaceWidth(g);
if (!(String.IsNullOrEmpty(box.WordSpacing) || box.WordSpacing == CssConstants.Normal))
{
w += CssValueParser.ParseLength(box.WordSpacing, 0, box, true);
}
return w;
}
/// <summary>
/// Gets the result of collapsing the vertical margins of the two boxes
/// </summary>
/// <param name="prevSibling">the previous box under the same parent</param>
/// <returns>Resulting top margin</returns>
protected double MarginTopCollapse(CssBoxProperties prevSibling)
{
double value;
if (prevSibling != null)
{
value = Math.Max(prevSibling.ActualMarginBottom, ActualMarginTop);
CollapsedMarginTop = value;
}
else if (_parentBox != null && ActualPaddingTop < 0.1 && ActualPaddingBottom < 0.1 && _parentBox.ActualPaddingTop < 0.1 && _parentBox.ActualPaddingBottom < 0.1)
{
value = Math.Max(0, ActualMarginTop - Math.Max(_parentBox.ActualMarginTop, _parentBox.CollapsedMarginTop));
}
else
{
value = ActualMarginTop;
}
// fix for hr tag
if (value < 0.1 && HtmlTag != null && HtmlTag.Name == "hr")
{
value = GetEmHeight() * 1.1f;
}
return value;
}
/// <summary>
/// Get the border style for the given box border.
/// </summary>
private static string GetStyle(Border border, CssBoxProperties box)
{
switch (border)
{
case Border.Top:
return box.BorderTopStyle;
case Border.Right:
return box.BorderRightStyle;
case Border.Bottom:
return box.BorderBottomStyle;
case Border.Left:
return box.BorderLeftStyle;
default:
throw new ArgumentOutOfRangeException("border");
}
}
/// <summary>
/// Get the border width for the given box border.
/// </summary>
private static double GetWidth(Border border, CssBoxProperties box)
{
switch (border)
{
case Border.Top:
return box.ActualBorderTopWidth;
case Border.Right:
return box.ActualBorderRightWidth;
case Border.Bottom:
return box.ActualBorderBottomWidth;
case Border.Left:
return box.ActualBorderLeftWidth;
default:
throw new ArgumentOutOfRangeException("border");
}
}
/// <summary>
/// Get the border color for the given box border.
/// </summary>
private static RColor GetColor(Border border, CssBoxProperties box, string style)
{
switch (border)
{
case Border.Top:
return style == CssConstants.Inset ? Darken(box.ActualBorderTopColor) : box.ActualBorderTopColor;
case Border.Right:
return style == CssConstants.Outset ? Darken(box.ActualBorderRightColor) : box.ActualBorderRightColor;
case Border.Bottom:
return style == CssConstants.Outset ? Darken(box.ActualBorderBottomColor) : box.ActualBorderBottomColor;
case Border.Left:
return style == CssConstants.Inset ? Darken(box.ActualBorderLeftColor) : box.ActualBorderLeftColor;
default:
throw new ArgumentOutOfRangeException("border");
}
}