virtual public float?GetHeight(Tag tag, float pageHeight)
{
float? height = null;
String heightValue = null;
if (tag.CSS.TryGetValue(HTML.Attribute.HEIGHT, out heightValue) || tag.Attributes.TryGetValue(HTML.Attribute.HEIGHT, out heightValue))
{
if (utils.IsNumericValue(heightValue) || utils.IsMetricValue(heightValue))
{
height = utils.ParsePxInCmMmPcToPt(heightValue);
}
else if (utils.IsRelativeValue(heightValue))
{
Tag ancestor = tag;
float?firstAncestorsHeight = null;
while (firstAncestorsHeight == null && ancestor.Parent != null)
{
ancestor = ancestor.Parent;
firstAncestorsHeight = GetHeight(ancestor, pageHeight);
}
if (firstAncestorsHeight == null)
{
height = utils.ParseRelativeValue(heightValue, pageHeight);
}
else
{
height = utils.ParseRelativeValue(heightValue, firstAncestorsHeight.Value);
}
}
}
return(height);
}
public virtual float GetWidth(Tag tag, IList <String> rootTags, float pageWidth, float initialTotalWidth)
{
float width = 0;
String widthValue;
tag.CSS.TryGetValue(HTML.Attribute.WIDTH, out widthValue);
if (widthValue == null)
{
tag.Attributes.TryGetValue(HTML.Attribute.WIDTH, out widthValue);
}
if (widthValue != null)
{
if (utils.IsNumericValue(widthValue) || utils.IsMetricValue(widthValue))
{
width = utils.ParsePxInCmMmPcToPt(widthValue);
}
else if (utils.IsRelativeValue(widthValue))
{
Tag ancestor = tag;
float firstAncestorsWidth = 0;
while (firstAncestorsWidth == 0 && ancestor.Parent != null)
{
ancestor = ancestor.Parent;
firstAncestorsWidth = GetWidth(ancestor, rootTags, pageWidth, initialTotalWidth);
}
if (firstAncestorsWidth == 0)
{
width = utils.ParseRelativeValue(widthValue, pageWidth);
}
else
{
width = utils.ParseRelativeValue(widthValue, firstAncestorsWidth);
}
}
}
else if (rootTags.Contains(tag.Name))
{
if (Util.compare(initialTotalWidth, -1) == 0)
{
width = pageWidth;
}
else
{
width = initialTotalWidth;
}
}
return(width);
}
/**
* Returns the css value of the style <b>font-size</b> in a pt-value. Possible font-size values:
* <ul>
* <li>a constant in px, in, cm, mm, pc, em or ex,</li>
* <li>xx-small,</li>
* <li>x-small,</li>
* <li>small,</li>
* <li>medium,</li>
* <li>large,</li>
* <li>x-large,</li>
* <li>xx-large,</li>
* <li>smaller (than tag's parent size),</li>
* <li>larger (than tag's parent size),</li>
* <li>a percentage (e.g font-size:250%) of tag's parent size,</li>
* </ul>
* @param tag to get the font size of.
* @return float font size of the content of the tag in pt.
*/
public float TranslateFontSize(Tag tag)
{
float size = 12;
if (tag.CSS.ContainsKey(CSS.Property.FONT_SIZE))
{
String value = tag.CSS[CSS.Property.FONT_SIZE];
if (Util.EqualsIgnoreCase(value, CSS.Value.XX_SMALL))
{
size = 6.75f;
}
else if (Util.EqualsIgnoreCase(value, CSS.Value.X_SMALL))
{
size = 7.5f;
}
else if (Util.EqualsIgnoreCase(value, CSS.Value.SMALL))
{
size = 9.75f;
}
else if (Util.EqualsIgnoreCase(value, CSS.Value.MEDIUM))
{
size = 12f;
}
else if (Util.EqualsIgnoreCase(value, CSS.Value.LARGE))
{
size = 13.5f;
}
else if (Util.EqualsIgnoreCase(value, CSS.Value.X_LARGE))
{
size = 18f;
}
else if (Util.EqualsIgnoreCase(value, CSS.Value.XX_LARGE))
{
size = 24f;
}
else if (Util.EqualsIgnoreCase(value, CSS.Value.SMALLER))
{
if (tag.Parent != null)
{
float parentSize = GetFontSize(tag.Parent); // if the font-size of the parent can be set in some memory the translation part is not needed anymore.
if (parentSize <= 6.75f)
{
size = parentSize - 1;
}
else if (parentSize == 7.5f)
{
size = 6.75f;
}
else if (parentSize == 9.75f)
{
size = 7.5f;
}
else if (parentSize == 12f)
{
size = 9.75f;
}
else if (parentSize == 13.5f)
{
size = 12f;
}
else if (parentSize == 18f)
{
size = 13.5f;
}
else if (parentSize == 24f)
{
size = 18f;
}
else if (parentSize < 24f)
{
size = parentSize * 0.85f;
}
else if (parentSize >= 24)
{
size = parentSize * 2 / 3;
}
}
else
{
size = 9.75f;
}
}
else if (Util.EqualsIgnoreCase(value, CSS.Value.LARGER))
{
if (tag.Parent != null)
{
float parentSize = GetFontSize(tag.Parent); // if the font-size of the parent can be set in some memory the translation part is not needed anymore.
if (parentSize == 6.75f)
{
size = 7.5f;
}
else if (parentSize == 7.5f)
{
size = 9.75f;
}
else if (parentSize == 9.75f)
{
size = 12f;
}
else if (parentSize == 12f)
{
size = 13.5f;
}
else if (parentSize == 13.5f)
{
size = 18f;
}
else if (parentSize == 18f)
{
size = 24f;
}
else
{
size = parentSize * 1.5f;
}
}
else
{
size = 13.5f;
}
}
else if (utils.IsMetricValue(value) || utils.IsNumericValue(value))
{
size = utils.ParsePxInCmMmPcToPt(value);
}
else if (utils.IsRelativeValue(value))
{
float baseValue = 0;
if (tag.Parent != null)
{
baseValue = GetFontSize(tag.Parent);
}
else
{
baseValue = 12;
}
size = utils.ParseRelativeValue(value, baseValue);
}
}
return(size);
}