/* (non-Javadoc)
* @see com.itextpdf.html2pdf.css.resolve.HtmlStylesToCssConverter.IAttributeConverter#convert(com.itextpdf.styledxmlparser.html.node.IElementNode, java.lang.String)
*/
public virtual IList <CssDeclaration> Convert(IElementNode element, String value)
{
// Trim semicolons at the end because they seem to not affect the value in browsers
String cssEquivalent = iText.IO.Util.StringUtil.ReplaceAll(value, ";+$", "");
if (!CssTypesValidationUtils.IsMetricValue(cssEquivalent) && !cssEquivalent.EndsWith(CssConstants.PERCENTAGE
))
{
cssEquivalent += CssConstants.PX;
}
return(JavaUtil.ArraysAsList(new CssDeclaration(CssConstants.HEIGHT, cssEquivalent)));
}
/// <summary>Apply vertical alignment to inline elements.</summary>
/// <param name="cssProps">the CSS properties</param>
/// <param name="context">the processor context</param>
/// <param name="stylesContainer">the styles container</param>
/// <param name="childElements">the child elements</param>
public static void ApplyVerticalAlignmentForInlines(IDictionary <String, String> cssProps, ProcessorContext
context, IStylesContainer stylesContainer, IList <IPropertyContainer> childElements)
{
String vAlignVal = cssProps.Get(CssConstants.VERTICAL_ALIGN);
if (vAlignVal != null)
{
// TODO DEVSIX-1750 for inline images and tables (inline-blocks) v-align is not supported
float textRise = 0;
// TODO DEVSIX-3757 'top' and 'bottom' values are not supported;
// 'top' and 'bottom' require information of actual line height, therefore should be applied at layout level;
// 'sub', 'super' calculations are based on the behaviour of the common browsers (+33% and -20% shift accordingly from the parent's font size);
// 'middle', 'text-top', 'text-bottom' calculations are based on the approximate assumptions that x-height is 0.5 of the font size
// and descender and ascender heights are 0.2 and 0.8 of the font size accordingly.
if (CssConstants.SUB.Equals(vAlignVal) || CssConstants.SUPER.Equals(vAlignVal))
{
textRise = CalcTextRiseForSupSub(stylesContainer, vAlignVal);
}
else
{
if (CssConstants.MIDDLE.Equals(vAlignVal))
{
textRise = CalcTextRiseForMiddle(stylesContainer);
}
else
{
if (CssConstants.TEXT_TOP.Equals(vAlignVal))
{
textRise = CalcTextRiseForTextTop(stylesContainer, context.GetCssContext().GetRootFontSize());
}
else
{
if (CssConstants.TEXT_BOTTOM.Equals(vAlignVal))
{
textRise = CalcTextRiseForTextBottom(stylesContainer, context.GetCssContext().GetRootFontSize());
}
else
{
if (CssTypesValidationUtils.IsMetricValue(vAlignVal))
{
textRise = CssDimensionParsingUtils.ParseAbsoluteLength(vAlignVal);
}
else
{
if (vAlignVal.EndsWith(CssConstants.PERCENTAGE))
{
textRise = CalcTextRiseForPercentageValue(stylesContainer, context.GetCssContext().GetRootFontSize(), vAlignVal
);
}
}
}
}
}
}
if (textRise != 0)
{
foreach (IPropertyContainer element in childElements)
{
if (element is Text)
{
float?effectiveTr = element.GetProperty <float?>(Property.TEXT_RISE);
if (effectiveTr != null)
{
effectiveTr += textRise;
}
else
{
effectiveTr = textRise;
}
element.SetProperty(Property.TEXT_RISE, effectiveTr);
}
else
{
if (element is IBlockElement)
{
break;
}
}
}
}
}
}
/// <summary>Checks if a string represents length value.</summary>
/// <param name="pageSizeChunk">the string that possibly represents a length value</param>
/// <returns>true, if the string represents a length value</returns>
private static bool IsLengthValue(String pageSizeChunk)
{
return(CssTypesValidationUtils.IsMetricValue(pageSizeChunk) || CssTypesValidationUtils.IsRelativeValue(pageSizeChunk
));
}
