/// <summary>
/// Gets an attribute representing a single border side.
/// If a border style/color/width has been specified individually, it will override the grouped definition.
/// </summary>
/// <returns>If the attribute is misformed, the <see cref="HtmlBorder.IsValid"/> property is set to false.</returns>
public SideBorder GetAsSideBorder(String name)
{
string attrValue = this[name];
SideBorder border = SideBorder.Parse(attrValue);
// handle attributes specified individually.
Unit width = SideBorder.ParseWidth(this[name + "-width"]);
if (width.IsValid)
{
border.Width = width;
}
var color = GetAsColor(name + "-color");
if (!color.IsEmpty)
{
border.Color = color;
}
var style = ConverterUtility.ConvertToBorderStyle(this[name + "-style"]);
if (style != w.BorderValues.Nil)
{
border.Style = style;
}
return(border);
}
/// <summary>
/// Gets an attribute representing a color (named color, hexadecimal or hexadecimal
/// without the preceding # character).
/// </summary>
public System.Drawing.Color GetAsColor(String name)
{
string attrValue = this[name];
if (attrValue != null)
{
return(ConverterUtility.ConvertToForeColor(attrValue));
}
return(System.Drawing.Color.Empty);
}
/// <summary>
/// Gets the font attribute and combine with the style, size and family.
/// </summary>
public HtmlFont GetAsFont(String name)
{
HtmlFont font = HtmlFont.Parse(this[name]);
string attrValue = this[name + "-style"];
if (attrValue != null)
{
var style = ConverterUtility.ConvertToFontStyle(attrValue);
if (style.HasValue)
{
font.Style = style.Value;
}
}
attrValue = this[name + "-variant"];
if (attrValue != null)
{
var variant = ConverterUtility.ConvertToFontVariant(attrValue);
if (variant.HasValue)
{
font.Variant = variant.Value;
}
}
attrValue = this[name + "-weight"];
if (attrValue != null)
{
var weight = ConverterUtility.ConvertToFontWeight(attrValue);
if (weight.HasValue)
{
font.Weight = weight.Value;
}
}
attrValue = this[name + "-family"];
if (attrValue != null)
{
font.Family = ConverterUtility.ConvertToFontFamily(attrValue);
}
Unit unit = this.GetAsUnit(name + "-size");
if (unit.IsValid)
{
font.Size = unit;
}
return(font);
}
public static SideBorder Parse(String str)
{
if (str == null)
{
return(SideBorder.Empty);
}
// The properties of a border that can be set, are (in order): border-width, border-style, and border-color.
// It does not matter if one of the values above are missing, e.g. border:solid #ff0000; is allowed.
// The main problem for parsing this attribute is that the browsers allow any permutation of the values... meaning more coding :(
// http://www.w3schools.com/cssref/pr_border.asp
List <String> borderParts = new List <String>(str.Split(HttpUtility.WhiteSpaces, StringSplitOptions.RemoveEmptyEntries));
if (borderParts.Count == 0)
{
return(SideBorder.Empty);
}
// Initialize default values
Unit borderWidth = Unit.Empty;
Color borderColor = Color.Empty;
w.BorderValues borderStyle = w.BorderValues.Nil;
// Now try to guess the values with their permutation
// handle border style
for (int i = 0; i < borderParts.Count; i++)
{
borderStyle = ConverterUtility.ConvertToBorderStyle(borderParts[i]);
if (borderStyle != w.BorderValues.Nil)
{
borderParts.RemoveAt(i); // no need to process this part anymore
break;
}
}
for (int i = 0; i < borderParts.Count; i++)
{
borderWidth = ParseWidth(borderParts[i]);
if (borderWidth.IsValid)
{
borderParts.RemoveAt(i); // no need to process this part anymore
break;
}
}
// find width
if (borderParts.Count > 0)
{
borderColor = ConverterUtility.ConvertToForeColor(borderParts[0]);
}
// returns the instance with default value if needed.
// These value are the ones used by the browser, i.e: solid 3px black
return(new SideBorder(
borderStyle == w.BorderValues.Nil? w.BorderValues.Single : borderStyle,
borderColor.IsEmpty? Color.Black : borderColor,
borderWidth.IsFixed? borderWidth : new Unit(UnitMetric.Pixel, 4)));
}
/// <summary>
/// Move inside the current tag related to table (td, thead, tr, ...) and converts some common
/// attributes to their OpenXml equivalence.
/// </summary>
/// <param name="en">The Html enumerator positionned on a <i>table (or related)</i> tag.</param>
/// <param name="runStyleAttributes">The collection of attributes where to store new discovered attributes.</param>
public void ProcessCommonAttributes(HtmlEnumerator en, IList <OpenXmlElement> runStyleAttributes)
{
List <OpenXmlElement> containerStyleAttributes = new List <OpenXmlElement>();
var colorValue = en.StyleAttributes.GetAsColor("background-color");
// "background-color" is also handled by RunStyleCollection which duplicate this attribute (bug #13212). Let's ignore it
if (!colorValue.IsEmpty && en.CurrentTag.Equals("<td>", StringComparison.InvariantCultureIgnoreCase))
{
colorValue = System.Drawing.Color.Empty;
}
if (colorValue.IsEmpty)
{
colorValue = en.Attributes.GetAsColor("bgcolor");
}
if (!colorValue.IsEmpty)
{
containerStyleAttributes.Add(
new Shading()
{
Val = ShadingPatternValues.Clear, Color = "auto", Fill = colorValue.ToHexString()
});
}
var htmlAlign = en.StyleAttributes["vertical-align"];
if (htmlAlign == null)
{
htmlAlign = en.Attributes["valign"];
}
if (htmlAlign != null)
{
TableVerticalAlignmentValues?valign = ConverterUtility.FormatVAlign(htmlAlign);
if (valign.HasValue)
{
containerStyleAttributes.Add(new TableCellVerticalAlignment()
{
Val = valign
});
}
}
htmlAlign = en.StyleAttributes["text-align"];
if (htmlAlign == null)
{
htmlAlign = en.Attributes["align"];
}
if (htmlAlign != null)
{
JustificationValues?halign = ConverterUtility.FormatParagraphAlign(htmlAlign);
if (halign.HasValue)
{
this.BeginTagForParagraph(en.CurrentTag, new KeepNext(), new Justification {
Val = halign
});
}
}
// implemented by ddforge
String[] classes = en.Attributes.GetAsClass();
if (classes != null)
{
for (int i = 0; i < classes.Length; i++)
{
string className = documentStyle.GetStyle(classes[i], StyleValues.Table, ignoreCase: true);
if (className != null) // only one Style can be applied in OpenXml and dealing with inheritance is out of scope
{
containerStyleAttributes.Add(new RunStyle()
{
Val = className
});
break;
}
}
}
this.BeginTag(en.CurrentTag, containerStyleAttributes);
// Process general run styles
documentStyle.Runs.ProcessCommonAttributes(en, runStyleAttributes);
}
/// <summary>
/// There is a few attributes shared by a large number of tags. This method will check them for a limited
/// number of tags (<p>, <pre>, <div>, <span> and <body>).
/// </summary>
/// <returns>Returns true if the processing of this tag should generate a new paragraph.</returns>
public bool ProcessCommonAttributes(HtmlEnumerator en, IList <OpenXmlElement> styleAttributes)
{
if (en.Attributes.Count == 0)
{
return(false);
}
bool newParagraph = false;
List <OpenXmlElement> containerStyleAttributes = new List <OpenXmlElement>();
string attrValue = en.Attributes["lang"];
if (attrValue != null && attrValue.Length > 0)
{
try
{
var ci = System.Globalization.CultureInfo.GetCultureInfo(attrValue);
bool rtl = ci.TextInfo.IsRightToLeft;
Languages lang = new Languages()
{
Val = ci.TwoLetterISOLanguageName
};
if (rtl)
{
lang.Bidi = ci.Name;
styleAttributes.Add(new Languages()
{
Bidi = ci.Name
});
// notify table
documentStyle.Tables.BeginTag(en.CurrentTag, new TableJustification()
{
Val = TableRowAlignmentValues.Right
});
}
containerStyleAttributes.Add(new ParagraphMarkRunProperties(lang));
containerStyleAttributes.Add(new BiDi()
{
Val = OnOffValue.FromBoolean(rtl)
});
}
catch (ArgumentException)
{
// lang not valid, ignore it
}
}
attrValue = en.StyleAttributes["text-align"];
if (attrValue != null && en.CurrentTag != "<font>")
{
JustificationValues?align = ConverterUtility.FormatParagraphAlign(attrValue);
if (align.HasValue)
{
containerStyleAttributes.Add(new Justification {
Val = align
});
}
}
// according to w3c, dir should be used in conjonction with lang. But whatever happens, we'll apply the RTL layout
attrValue = en.Attributes["dir"];
if (attrValue != null)
{
if (attrValue.Equals("rtl", StringComparison.OrdinalIgnoreCase))
{
styleAttributes.Add(new RightToLeftText());
containerStyleAttributes.Add(new Justification()
{
Val = JustificationValues.Right
});
}
else if (attrValue.Equals("ltr", StringComparison.OrdinalIgnoreCase))
{
containerStyleAttributes.Add(new Justification()
{
Val = JustificationValues.Left
});
}
}
// <span> and <font> are considered as semi-container attribute. When converted to OpenXml, there are Runs but not Paragraphs
if (en.CurrentTag == "<p>" || en.CurrentTag == "<div>" || en.CurrentTag == "<pre>")
{
var border = en.StyleAttributes.GetAsBorder("border");
if (!border.IsEmpty)
{
ParagraphBorders borders = new ParagraphBorders();
if (border.Top.IsValid)
{
borders.Append(
new TopBorder()
{
Val = border.Top.Style, Color = border.Top.Color.ToHexString(), Size = (uint)border.Top.Width.ValueInPx * 4, Space = 1U
});
}
if (border.Left.IsValid)
{
borders.Append(
new LeftBorder()
{
Val = border.Left.Style, Color = border.Left.Color.ToHexString(), Size = (uint)border.Left.Width.ValueInPx * 4, Space = 1U
});
}
if (border.Bottom.IsValid)
{
borders.Append(
new BottomBorder()
{
Val = border.Bottom.Style, Color = border.Bottom.Color.ToHexString(), Size = (uint)border.Bottom.Width.ValueInPx * 4, Space = 1U
});
}
if (border.Right.IsValid)
{
borders.Append(
new RightBorder()
{
Val = border.Right.Style, Color = border.Right.Color.ToHexString(), Size = (uint)border.Right.Width.ValueInPx * 4, Space = 1U
});
}
containerStyleAttributes.Add(borders);
newParagraph = true;
}
}
else if (en.CurrentTag == "<span>" || en.CurrentTag == "<font>")
{
// OpenXml limits the border to 4-side of the same color and style.
SideBorder border = en.StyleAttributes.GetAsSideBorder("border");
if (border.IsValid)
{
styleAttributes.Add(new DocumentFormat.OpenXml.Wordprocessing.Border()
{
Val = border.Style,
Color = border.Color.ToHexString(),
Size = (uint)border.Width.ValueInPx * 4,
Space = 1U
});
}
}
String[] classes = en.Attributes.GetAsClass();
if (classes != null)
{
for (int i = 0; i < classes.Length; i++)
{
string className = documentStyle.GetStyle(classes[i], StyleValues.Paragraph, ignoreCase: true);
if (className != null)
{
containerStyleAttributes.Add(new ParagraphStyleId()
{
Val = className
});
newParagraph = true;
break;
}
}
}
Margin margin = en.StyleAttributes.GetAsMargin("margin");
Indentation indentation = null;
if (!margin.IsEmpty)
{
if (margin.Top.IsFixed || margin.Bottom.IsFixed)
{
SpacingBetweenLines spacing = new SpacingBetweenLines();
if (margin.Top.IsFixed)
{
spacing.Before = margin.Top.ValueInDxa.ToString(CultureInfo.InvariantCulture);
}
if (margin.Bottom.IsFixed)
{
spacing.After = margin.Bottom.ValueInDxa.ToString(CultureInfo.InvariantCulture);
}
containerStyleAttributes.Add(spacing);
}
if (margin.Left.IsFixed || margin.Right.IsFixed)
{
indentation = new Indentation();
if (margin.Left.IsFixed)
{
indentation.Left = margin.Left.ValueInDxa.ToString(CultureInfo.InvariantCulture);
}
if (margin.Right.IsFixed)
{
indentation.Right = margin.Right.ValueInDxa.ToString(CultureInfo.InvariantCulture);
}
containerStyleAttributes.Add(indentation);
}
}
// implemented by giorand (feature #13787)
Unit textIndent = en.StyleAttributes.GetAsUnit("text-indent");
if (textIndent.IsValid && (en.CurrentTag == "<p>" || en.CurrentTag == "<div>"))
{
if (indentation == null)
{
indentation = new Indentation();
}
indentation.FirstLine = textIndent.ValueInDxa.ToString(CultureInfo.InvariantCulture);
containerStyleAttributes.Add(indentation);
}
this.BeginTag(en.CurrentTag, containerStyleAttributes);
// Process general run styles
documentStyle.Runs.ProcessCommonAttributes(en, styleAttributes);
return(newParagraph);
}
public static HtmlFont Parse(String str)
{
if (str == null)
{
return(HtmlFont.Empty);
}
// The font shorthand property sets all the font properties in one declaration.
// The properties that can be set, are (in order):
// "font-style font-variant font-weight font-size/line-height font-family"
// The font-size and font-family values are required.
// If one of the other values are missing, the default values will be inserted, if any.
// http://www.w3schools.com/cssref/pr_font_font.asp
// in order to split by white spaces, we remove any white spaces between 2 family names (ex: Verdana, Arial -> Verdana,Arial)
str = System.Text.RegularExpressions.Regex.Replace(str, @",\s+?", ",");
String[] fontParts = str.Split(HttpUtility.WhiteSpaces, StringSplitOptions.RemoveEmptyEntries);
if (fontParts.Length < 2)
{
return(HtmlFont.Empty);
}
HtmlFont font = HtmlFont.Empty;
if (fontParts.Length == 2) // 2=the minimal set of required parameters
{
// should be the size and the family (in that order). Others are set to their default values
font.size = ReadFontSize(fontParts[0]);
if (!font.size.IsValid)
{
return(HtmlFont.Empty);
}
font.family = ConverterUtility.ConvertToFontFamily(fontParts[1]);
return(font);
}
int index = 0;
FontStyle?style = ConverterUtility.ConvertToFontStyle(fontParts[index]);
if (style.HasValue)
{
font.style = style.Value; index++;
}
if (index + 2 > fontParts.Length)
{
return(HtmlFont.Empty);
}
FontVariant?variant = ConverterUtility.ConvertToFontVariant(fontParts[index]);
if (variant.HasValue)
{
font.variant = variant.Value; index++;
}
if (index + 2 > fontParts.Length)
{
return(HtmlFont.Empty);
}
FontWeight?weight = ConverterUtility.ConvertToFontWeight(fontParts[index]);
if (weight.HasValue)
{
font.weight = weight.Value; index++;
}
if (fontParts.Length - index < 2)
{
return(HtmlFont.Empty);
}
font.size = ReadFontSize(fontParts[fontParts.Length - 2]);
if (!font.size.IsValid)
{
return(HtmlFont.Empty);
}
font.family = ConverterUtility.ConvertToFontFamily(fontParts[fontParts.Length - 1]);
return(font);
}
private static Unit ReadFontSize(string str)
{
Unit size = ConverterUtility.ConvertToFontSize(str);
return(size); // % and ratio font-size/line-height are not supported
}
public static Unit Parse(String str)
{
if (str == null)
{
return(Unit.Empty);
}
str = str.Trim().ToLower(CultureInfo.InvariantCulture);
int length = str.Length;
int digitLength = -1;
for (int i = 0; i < length; i++)
{
char ch = str[i];
if ((ch < '0' || ch > '9') && (ch != '-' && ch != '.' && ch != ','))
{
break;
}
digitLength = i;
}
if (digitLength == -1)
{
// No digits in the width, we ignore this style
return(str == "auto"? Unit.Auto : Unit.Empty);
}
UnitMetric type;
if (digitLength < length - 1)
{
type = ConverterUtility.ConvertToUnitMetric(str.Substring(digitLength + 1).Trim());
}
else
{
type = UnitMetric.Pixel;
}
string v = str.Substring(0, digitLength + 1);
double value;
try
{
TypeConverter converter = new DoubleConverter();
value = (double)converter.ConvertFromString(null, CultureInfo.InvariantCulture, v);
if (value < Int16.MinValue || value > Int16.MaxValue)
{
return(Unit.Empty);
}
}
catch (FormatException)
{
return(Unit.Empty);
}
catch (ArithmeticException)
{
return(Unit.Empty);
}
return(new Unit(type, value));
}
