/* (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)));
}
private static void SetLineHeight(IPropertyContainer elementToSet, String lineHeight, float em, float rem)
{
if (lineHeight != null && !CssConstants.NORMAL.Equals(lineHeight) && !CssConstants.AUTO.Equals(lineHeight)
)
{
if (CssTypesValidationUtils.IsNumericValue(lineHeight))
{
float?number = CssDimensionParsingUtils.ParseFloat(lineHeight);
if (number != null)
{
elementToSet.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateMultipliedValue((float)number));
}
else
{
elementToSet.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateNormalValue());
}
}
else
{
UnitValue lineHeightValue = CssDimensionParsingUtils.ParseLengthValueToPt(lineHeight, em, rem);
if (lineHeightValue != null && lineHeightValue.IsPointValue())
{
elementToSet.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateFixedValue(lineHeightValue.GetValue()));
}
else
{
if (lineHeightValue != null)
{
elementToSet.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateMultipliedValue(lineHeightValue.GetValue()
/ 100f));
}
else
{
elementToSet.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateNormalValue());
}
}
}
}
else
{
elementToSet.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateNormalValue());
}
}
private static void SetLineHeightByLeading(IPropertyContainer element, String lineHeight, float em, float
rem)
{
// specification does not give auto as a possible lineHeight value
// nevertheless some browsers compute it as normal so we apply the same behaviour.
// What's more, it's basically the same thing as if lineHeight is not set in the first place
if (lineHeight != null && !CssConstants.NORMAL.Equals(lineHeight) && !CssConstants.AUTO.Equals(lineHeight)
)
{
if (CssTypesValidationUtils.IsNumericValue(lineHeight))
{
float?mult = CssDimensionParsingUtils.ParseFloat(lineHeight);
if (mult != null)
{
element.SetProperty(Property.LEADING, new Leading(Leading.MULTIPLIED, (float)mult));
}
}
else
{
UnitValue lineHeightValue = CssDimensionParsingUtils.ParseLengthValueToPt(lineHeight, em, rem);
if (lineHeightValue != null && lineHeightValue.IsPointValue())
{
element.SetProperty(Property.LEADING, new Leading(Leading.FIXED, lineHeightValue.GetValue()));
}
else
{
if (lineHeightValue != null)
{
element.SetProperty(Property.LEADING, new Leading(Leading.MULTIPLIED, lineHeightValue.GetValue() / 100));
}
}
}
}
else
{
element.SetProperty(Property.LEADING, new Leading(Leading.MULTIPLIED, DEFAULT_LINE_HEIGHT));
}
}
/// <summary>Gets the actual value of the line height.</summary>
/// <param name="fontSize">the font size</param>
/// <param name="rootFontSize">the root font size</param>
/// <param name="lineHeightStr">
/// the line height as a
/// <see cref="System.String"/>
/// </param>
/// <returns>
/// the actual line height as a
/// <c>float</c>
/// </returns>
private static float GetLineHeightActualValue(float fontSize, float rootFontSize, String lineHeightStr)
{
float lineHeightActualValue;
if (lineHeightStr != null)
{
if (CssConstants.NORMAL.Equals(lineHeightStr) || CssConstants.AUTO.Equals(lineHeightStr))
{
lineHeightActualValue = (float)(fontSize * 1.2);
}
else
{
UnitValue lineHeightValue = CssDimensionParsingUtils.ParseLengthValueToPt(lineHeightStr, fontSize, rootFontSize
);
if (CssTypesValidationUtils.IsNumericValue(lineHeightStr))
{
lineHeightActualValue = fontSize * lineHeightValue.GetValue();
}
else
{
if (lineHeightValue.IsPointValue())
{
lineHeightActualValue = lineHeightValue.GetValue();
}
else
{
lineHeightActualValue = fontSize * lineHeightValue.GetValue() / 100;
}
}
}
}
else
{
lineHeightActualValue = (float)(fontSize * 1.2);
}
return(lineHeightActualValue);
}
/// <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
));
}
/* (non-Javadoc)
* @see com.itextpdf.html2pdf.css.resolve.ICssResolver#resolveStyles(com.itextpdf.html2pdf.html.node.INode, com.itextpdf.html2pdf.css.resolve.CssContext)
*/
private IDictionary <String, String> ResolveStyles(INode element, CssContext context)
{
IDictionary <String, String> elementStyles = ResolveElementsStyles(element);
if (CssConstants.CURRENTCOLOR.Equals(elementStyles.Get(CssConstants.COLOR)))
{
// css-color-3/#currentcolor:
// If the ‘currentColor’ keyword is set on the ‘color’ property itself, it is treated as ‘color: inherit’.
elementStyles.Put(CssConstants.COLOR, CssConstants.INHERIT);
}
String parentFontSizeStr = null;
if (element.ParentNode() is IStylesContainer)
{
IStylesContainer parentNode = (IStylesContainer)element.ParentNode();
IDictionary <String, String> parentStyles = parentNode.GetStyles();
if (parentStyles == null && !(element.ParentNode() is IDocumentNode))
{
ILog logger = LogManager.GetLogger(typeof(iText.Html2pdf.Css.Resolve.DefaultCssResolver));
logger.Error(iText.Html2pdf.LogMessageConstant.ERROR_RESOLVING_PARENT_STYLES);
}
if (parentStyles != null)
{
ICollection <IStyleInheritance> inheritanceRules = new HashSet <IStyleInheritance>();
inheritanceRules.Add(cssInheritance);
foreach (KeyValuePair <String, String> entry in parentStyles)
{
elementStyles = StyleUtil.MergeParentStyleDeclaration(elementStyles, entry.Key, entry.Value, parentStyles.
Get(CommonCssConstants.FONT_SIZE), inheritanceRules);
}
parentFontSizeStr = parentStyles.Get(CssConstants.FONT_SIZE);
}
}
String elementFontSize = elementStyles.Get(CssConstants.FONT_SIZE);
if (CssTypesValidationUtils.IsRelativeValue(elementFontSize) || CssConstants.LARGER.Equals(elementFontSize
) || CssConstants.SMALLER.Equals(elementFontSize))
{
float baseFontSize;
if (CssTypesValidationUtils.IsRemValue(elementFontSize))
{
baseFontSize = context.GetRootFontSize();
}
else
{
if (parentFontSizeStr == null)
{
baseFontSize = CssDimensionParsingUtils.ParseAbsoluteFontSize(CssDefaults.GetDefaultValue(CssConstants.FONT_SIZE
));
}
else
{
baseFontSize = CssDimensionParsingUtils.ParseAbsoluteLength(parentFontSizeStr);
}
}
float absoluteFontSize = CssDimensionParsingUtils.ParseRelativeFontSize(elementFontSize, baseFontSize);
// Format to 4 decimal places to prevent differences between Java and C#
elementStyles.Put(CssConstants.FONT_SIZE, DecimalFormatUtil.FormatNumber(absoluteFontSize, "0.####") + CssConstants
.PT);
}
else
{
elementStyles.Put(CssConstants.FONT_SIZE, Convert.ToString(CssDimensionParsingUtils.ParseAbsoluteFontSize(
elementFontSize), System.Globalization.CultureInfo.InvariantCulture) + CssConstants.PT);
}
// Update root font size
if (element is IElementNode && TagConstants.HTML.Equals(((IElementNode)element).Name()))
{
context.SetRootFontSize(elementStyles.Get(CssConstants.FONT_SIZE));
}
ICollection <String> keys = new HashSet <String>();
foreach (KeyValuePair <String, String> entry in elementStyles)
{
if (CssConstants.INITIAL.Equals(entry.Value) || CssConstants.INHERIT.Equals(entry.Value))
{
// if "inherit" is not resolved till now, parents don't have it
keys.Add(entry.Key);
}
}
foreach (String key in keys)
{
elementStyles.Put(key, CssDefaults.GetDefaultValue(key));
}
// This is needed for correct resolving of content property, so doing it right here
CounterProcessorUtil.ProcessCounters(elementStyles, context);
ResolveContentProperty(elementStyles, element, context);
return(elementStyles);
}