/// <summary>
/// Init.
/// </summary>
public CssParser(RAdapter adapter)
{
ArgChecker.AssertArgNotNull(adapter, "global");
_valueParser = new CssValueParser(adapter);
_adapter = adapter;
}
static void CreateSvgEllipse(SvgElement parentNode, HtmlElement elem)
{
SvgEllipseSpec spec = new SvgEllipseSpec();
SvgEllipse shape = new SvgEllipse(spec, elem);
parentNode.AddChild(shape);
foreach (WebDom.DomAttribute attr in elem.GetAttributeIterForward())
{
WebDom.WellknownName wellknownName = (WebDom.WellknownName)attr.LocalNameIndex;
switch (wellknownName)
{
case WebDom.WellknownName.Svg_Cx:
{
spec.X = UserMapUtil.ParseGenericLength(attr.Value);
} break;
case WebDom.WellknownName.Svg_Cy:
{
spec.Y = UserMapUtil.ParseGenericLength(attr.Value);
} break;
case WellknownName.Svg_Rx:
{
spec.RadiusX = UserMapUtil.ParseGenericLength(attr.Value);
} break;
case WellknownName.Svg_Ry:
{
spec.RadiusY = UserMapUtil.ParseGenericLength(attr.Value);
} break;
case WebDom.WellknownName.Svg_Fill:
{
spec.ActualColor = CssValueParser.GetActualColor(attr.Value);
} break;
case WebDom.WellknownName.Svg_Stroke:
{
spec.StrokeColor = CssValueParser.GetActualColor(attr.Value);
} break;
case WebDom.WellknownName.Svg_Stroke_Width:
{
spec.StrokeWidth = UserMapUtil.ParseGenericLength(attr.Value);
} break;
case WebDom.WellknownName.Svg_Transform:
{
//TODO: parse svg transform function
} break;
default:
{
//other attrs
} break;
}
}
}
private void CalcTableSize(RGraphics g)
{
if (Display != CssConstants.None)
{
RectanglesReset();
MeasureWordsSize(g);
}
double width = ContainingBlock.Size.Width
- ContainingBlock.ActualPaddingLeft - ContainingBlock.ActualPaddingRight
- ContainingBlock.ActualBorderLeftWidth - ContainingBlock.ActualBorderRightWidth;
double height = ContainingBlock.Size.Height
- ContainingBlock.ActualPaddingTop - ContainingBlock.ActualPaddingBottom
- ContainingBlock.ActualBorderTopWidth - ContainingBlock.ActualBorderBottomWidth;
bool _widthSpecified = false;
bool _heightSpecified = false;
if (Width != CssConstants.Auto && !string.IsNullOrEmpty(Width))
{
width = CssValueParser.ParseLength(Width, width, this);
_widthSpecified = width > 0 ? true : false;
}
if (Height != CssConstants.Auto && !string.IsNullOrEmpty(Height))
{
height = CssValueParser.ParseLength(Height, height, this);
_heightSpecified = height > 0 ? true : false;
}
Size = new RSize(_widthSpecified ? width : 0, _heightSpecified ? height : 0);
}
/// <summary>
/// Handle mouse up to handle selection and link click.
/// </summary>
/// <param name="parent">the control hosting the html to invalidate</param>
/// <param name="e">the mouse event args</param>
public void HandleMouseUp(Control parent, MouseEventArgs e)
{
ArgChecker.AssertArgNotNull(parent, "parent");
ArgChecker.AssertArgNotNull(e, "e");
if (_selectionHandler != null)
{
var inSelection = _selectionHandler.HandleMouseUp(parent, e.Button);
if (!inSelection && (e.Button & MouseButtons.Left) != 0)
{
var loc = OffsetByScroll(e.Location);
var link = DomUtils.GetLinkBox(_root, loc);
if (link != null)
{
if (LinkClicked != null)
{
var args = new HtmlLinkClickedEventArgs(link.GetAttribute("href"));
LinkClicked(this, args);
if (args.Handled)
{
return;
}
}
CssValueParser.GoLink(link.GetAttribute("href", string.Empty), Bridge);
}
}
}
}
/// <summary>
/// Assigns words its width and height
/// </summary>
/// <param name="g"></param>
internal void MeasureWordsSize(Graphics g)
{
// Check if measure white space if not yet done to measure once
if (!_wordsSizeMeasured)
{
MeasureWordSpacing(g);
if (HtmlTag != null && HtmlTag.Name == "img")
{
var image = CssValueParser.GetImage(GetAttribute("src"), HtmlContainer.Bridge);
var word = new CssBoxWord(this, image);
Words.Clear();
Words.Add(word);
}
else if (Words.Count > 0)
{
foreach (var boxWord in Words)
{
var sf = new StringFormat();
sf.SetMeasurableCharacterRanges(new[] { new CharacterRange(0, boxWord.Text.Length) });
var regions = g.MeasureCharacterRanges(boxWord.Text, ActualFont, new RectangleF(0, 0, float.MaxValue, float.MaxValue), sf);
SizeF s = regions[0].GetBounds(g).Size;
PointF p = regions[0].GetBounds(g).Location;
boxWord.LastMeasureOffset = new PointF(p.X, p.Y);
boxWord.Width = s.Width + ActualWordSpacing;
boxWord.Height = s.Height;
}
}
_wordsSizeMeasured = true;
}
}
/// <summary>
/// Measures the bounds of box and children, recursively.<br/>
/// Performs layout of the DOM structure creating lines by set bounds restrictions.
/// </summary>
/// <param name="g">Device context to use</param>
protected override void PerformLayoutImp(IGraphics g)
{
if (Display == CssConstants.None)
{
return;
}
RectanglesReset();
CssBox prevSibling = DomUtils.GetPreviousSibling(this);
float left = ContainingBlock.Location.X + ContainingBlock.ActualPaddingLeft + ActualMarginLeft +
ContainingBlock.ActualBorderLeftWidth;
float top = (prevSibling == null && ParentBox != null
? ParentBox.ClientTop
: ParentBox == null ? Location.Y : 0) + MarginTopCollapse(prevSibling) +
(prevSibling != null ? prevSibling.ActualBottom + prevSibling.ActualBorderBottomWidth : 0);
Location = new PointF(left, top);
ActualBottom = top;
//width at 100% (or auto)
float minwidth = GetMinimumWidth();
float width = ContainingBlock.Size.Width
- ContainingBlock.ActualPaddingLeft - ContainingBlock.ActualPaddingRight
- ContainingBlock.ActualBorderLeftWidth - ContainingBlock.ActualBorderRightWidth
- ActualMarginLeft - ActualMarginRight - ActualBorderLeftWidth - ActualBorderRightWidth;
//Check width if not auto
if (Width != CssConstants.Auto && !string.IsNullOrEmpty(Width))
{
width = CssValueParser.ParseLength(Width, width, this);
}
if (width < minwidth || width >= 9999)
{
width = minwidth;
}
float height = ActualHeight;
if (height < 1)
{
height = Size.Height + ActualBorderTopWidth + ActualBorderBottomWidth;
}
if (height < 1)
{
height = 2;
}
if (height <= 2 && ActualBorderTopWidth < 1 && ActualBorderBottomWidth < 1)
{
BorderTopStyle = BorderBottomStyle = CssConstants.Solid;
BorderTopWidth = "1px";
BorderBottomWidth = "1px";
}
Size = new SizeF(width, height);
ActualBottom = Location.Y + ActualPaddingTop + ActualPaddingBottom + height;
}
public CssValue Parse(string cssValue)
{
var parser = new CssValueParser();
parser.SetContext(cssValue);
var val = parser.DoParse();
return(val);
}
/// <summary>
/// Gets the white space width of the specified box
/// </summary>
/// <param name="g"></param>
/// <param name="box"></param>
/// <returns></returns>
public static float WhiteSpace(Graphics g, CssBoxProperties box)
{
float w = MeasureWhitespace(g, box.ActualFont);
if (!(String.IsNullOrEmpty(box.WordSpacing) || box.WordSpacing == CssConstants.Normal))
{
w += CssValueParser.ParseLength(box.WordSpacing, 0, box, true);
}
return(w);
}
/// <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>
/// Measures the bounds of box and children, recursively.<br/>
/// Performs layout of the DOM structure creating lines by set bounds restrictions.
/// </summary>
/// <param name="g">Device context to use</param>
protected override void PerformLayoutImp(RGraphics g)
{
if (this.Display == CssConstants.None)
{
return;
}
this.RectanglesReset();
var prevSibling = DomUtils.GetPreviousSibling(this);
double left = this.ContainingBlock.Location.X + this.ContainingBlock.ActualPaddingLeft + this.ActualMarginLeft + this.ContainingBlock.ActualBorderLeftWidth;
double top = (prevSibling == null && this.ParentBox != null ? this.ParentBox.ClientTop : this.ParentBox == null ? this.Location.Y : 0) + this.MarginTopCollapse(prevSibling) + (prevSibling != null ? prevSibling.ActualBottom + prevSibling.ActualBorderBottomWidth : 0);
this.Location = new RPoint(left, top);
this.ActualBottom = top;
//width at 100% (or auto)
double minwidth = this.GetMinimumWidth();
double width = this.ContainingBlock.Size.Width
- this.ContainingBlock.ActualPaddingLeft - this.ContainingBlock.ActualPaddingRight
- this.ContainingBlock.ActualBorderLeftWidth - this.ContainingBlock.ActualBorderRightWidth
- this.ActualMarginLeft - this.ActualMarginRight - this.ActualBorderLeftWidth - this.ActualBorderRightWidth;
//Check width if not auto
if (this.Width != CssConstants.Auto && !string.IsNullOrEmpty(this.Width))
{
width = CssValueParser.ParseLength(this.Width, width, this);
}
if (width < minwidth || width >= 9999)
{
width = minwidth;
}
double height = this.ActualHeight;
if (height < 1)
{
height = this.Size.Height + this.ActualBorderTopWidth + this.ActualBorderBottomWidth;
}
if (height < 1)
{
height = 2;
}
if (height <= 2 && this.ActualBorderTopWidth < 1 && this.ActualBorderBottomWidth < 1)
{
this.BorderTopStyle = this.BorderBottomStyle = CssConstants.Solid;
this.BorderTopWidth = "1px";
this.BorderBottomWidth = "1px";
}
this.Size = new RSize(width, height);
this.ActualBottom = this.Location.Y + this.ActualPaddingTop + this.ActualPaddingBottom + height;
}
/// <summary>
/// Gets the available width for the whole table.
/// It also sets the value of WidthSpecified
/// </summary>
/// <returns></returns>
/// <remarks>
/// The table's width can be larger than the result of this method, because of the minimum
/// size that individual boxes.
/// </remarks>
private double GetMaxTableWidth()
{
var tblen = new CssLength(_tableBox.MaxWidth);
if (tblen.Number > 0)
{
_widthSpecified = true;
return(CssValueParser.ParseLength(_tableBox.MaxWidth, _tableBox.ParentBox.AvailableWidth, _tableBox));
}
return(9999f);
}
static CssLength SetLineHeight(this CssBox box, CssLength len)
{
//2014,2015,
//from www.w3c.org/wiki/Css/Properties/line-height
//line height in <percentage> :
//The computed value if the property is percentage multiplied by the
//element's computed font size.
return(CssLength.MakePixelLength(
CssValueParser.ConvertToPx(len, box.GetEmHeight(), box)));
}
/// <summary>
/// Measures the width of whitespace between words (set <see cref="ActualWordSpacing"/>).
/// </summary>
protected void MeasureWordSpacing(RGraphics g)
{
if (double.IsNaN(ActualWordSpacing))
{
_actualWordSpacing = CssUtils.WhiteSpace(g, this);
if (WordSpacing != CssConstants.Normal)
{
string len = RegexParserUtils.Search(RegexParserUtils.CssLength, WordSpacing);
_actualWordSpacing += CssValueParser.ParseLength(len, 1, this);
}
}
}
public void SubArg()
{
var parser = new CssValueParser();
parser.SetContext("fn(#fff)");
var arg = parser.DoParse();
Assert.IsTrue(parser.End);
Assert.AreEqual(0, parser.Errors.Count);
Assert.IsTrue(arg.IsValid);
Assert.IsInstanceOfType(arg, typeof(CssSimpleValue));
Assert.AreEqual("fn(#fff)", arg.ToString());
}
public void WithParenthesis()
{
var parser = new CssValueParser();
parser.SetContext("(30%+10%)*3");
var arg = parser.DoParse();
Assert.IsTrue(parser.End);
Assert.AreEqual(0, parser.Errors.Count);
Assert.IsTrue(arg.IsValid);
Assert.IsInstanceOfType(arg, typeof(CssArithmeticOperation));
Assert.AreEqual("(30%+10%)*3", arg.ToString());
}
/// <summary>
/// Gets the available width for the whole table.
/// It also sets the value of WidthSpecified
/// </summary>
/// <returns></returns>
/// <remarks>
/// The table's width can be larger than the result of this method, because of the minimum
/// size that individual boxes.
/// </remarks>
private float GetMaxTableWidth()
{
var tblen = new CssLength(_tableBox.MaxWidth);
if (tblen.Number > 0)
{
_widthSpecified = true;
return(tblen.IsPercentage ? CssValueParser.ParseNumber(tblen.Length, _tableBox.ParentBox.AvailableWidth) : tblen.Number);
}
else
{
return(9999f);
}
}
/// <summary>
/// Gets the available width for the whole table.
/// It also sets the value of WidthSpecified
/// </summary>
/// <returns></returns>
/// <remarks>
/// The table's width can be larger than the result of this method, because of the minimum
/// size that individual boxes.
/// </remarks>
private double GetAvailableTableWidth()
{
CssLength tblen = new CssLength(_tableBox.Width);
if (tblen.Number > 0)
{
_widthSpecified = true;
return(CssValueParser.ParseLength(_tableBox.Width, _tableBox.ParentBox.AvailableWidth, _tableBox));
}
else
{
return(_tableBox.ParentBox.AvailableWidth);
}
}
void CreateSvgPolygon(SvgElement parentNode, HtmlElement elem)
{
SvgPolygonSpec spec = new SvgPolygonSpec();
SvgPolygon shape = new SvgPolygon(spec, elem);
parentNode.AddChild(shape);
foreach (WebDom.DomAttribute attr in elem.GetAttributeIterForward())
{
WebDom.WellknownName wellknownName = (WebDom.WellknownName)attr.LocalNameIndex;
switch (wellknownName)
{
case WebDom.WellknownName.Svg_Points:
{
//parse points
spec.Points = ParsePointList(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Fill:
{
spec.FillColor = CssValueParser.GetActualColor(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Stroke:
{
spec.StrokeColor = CssValueParser.GetActualColor(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Stroke_Width:
{
spec.StrokeWidth = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Transform:
{
//TODO: parse svg transform function
}
break;
default:
{
//other attrs
}
break;
}
}
}
public void ParseCssBoxWidth(CssBox box)
{
if (!(_parentLength == 0 && box.Width.Trim().EndsWith("%")))
{
value = CssValueParser.ParseLength(box.Width, _parentLength, box);
}
if (!(_parentLength == 0 && box.MaxWidth.Trim().EndsWith("%")))
{
max = CssValueParser.ParseLength(box.MaxWidth, _parentLength, box);
}
if (!(_parentLength == 0 && box.MinWidth.Trim().EndsWith("%")))
{
min = CssValueParser.ParseLength(box.MinWidth, _parentLength, box);
}
}
public void ParseCssBoxHeight(CssBox box)
{
if (!(_parentLength == 0 && box.Height.Trim().EndsWith("%")))
{
value = CssValueParser.ParseLength(box.Height, _parentLength, box);
}
if (!(_parentLength == 0 && box.MaxHeight.Trim().EndsWith("%")))
{
max = CssValueParser.ParseLength(box.MaxHeight, _parentLength, box);
}
if (!(_parentLength == 0 && box.MinHeight.Trim().EndsWith("%")))
{
min = CssValueParser.ParseLength(box.MinHeight, _parentLength, box);
}
}
public void Priority()
{
var parser = new CssValueParser();
parser.SetContext("30%/fn(2,3)+10%*1.4+2*3");
var arg = parser.DoParse();
Assert.IsTrue(parser.End);
Assert.AreEqual(0, parser.Errors.Count);
Assert.IsTrue(arg.IsValid);
Assert.IsInstanceOfType(arg, typeof(CssArithmeticOperation));
Assert.AreEqual("30%/fn(2,3)+10%*1.4+2*3", arg.ToString());
Assert.AreEqual("30%/fn(2,3)", ((CssArithmeticOperation)arg).Left.ToString());
Assert.AreEqual("10%*1.4+2*3", ((CssArithmeticOperation)arg).Right.ToString());
var o = ((CssArithmeticOperation)arg).Right;
Assert.IsInstanceOfType(o, typeof(CssArithmeticOperation));
Assert.AreEqual("10%*1.4", ((CssArithmeticOperation)o).Left.ToString());
Assert.AreEqual("2*3", ((CssArithmeticOperation)o).Right.ToString());
}
/// <summary>
/// Gets the available width for the whole table.
/// It also sets the value of <see cref="WidthSpecified"/>
/// </summary>
/// <returns></returns>
/// <remarks>
/// The table's width can be larger than the result of this method, because of the minimum
/// size that individual boxes.
/// </remarks>
private float GetAvailableWidth()
{
CssLength tblen = new CssLength(TableBox.Width);
if (tblen.Number > 0)
{
_widthSpecified = true;
if (tblen.IsPercentage)
{
return(CssValueParser.ParseNumber(tblen.Length, TableBox.ParentBox.AvailableWidth));
}
else
{
return(tblen.Number);
}
}
else
{
return(TableBox.ParentBox.AvailableWidth);
}
}
static void CreateSvgGroupElement(SvgElement parentNode, HtmlElement elem)
{
SvgVisualSpec spec = new SvgVisualSpec();
SvgGroupElement svgGroupElement = new SvgGroupElement(spec, elem);
parentNode.AddChild(svgGroupElement);
foreach (WebDom.DomAttribute attr in elem.GetAttributeIterForward())
{
WebDom.WellknownName wellknownName = (WebDom.WellknownName)attr.LocalNameIndex;
switch (wellknownName)
{
case WebDom.WellknownName.Svg_Fill:
{
spec.ActualColor = CssValueParser.GetActualColor(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Stroke:
{
spec.StrokeColor = CssValueParser.GetActualColor(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Stroke_Width:
{
spec.StrokeWidth = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
default:
{
//other attrs
}
break;
}
}
CreateSvgBoxContent(svgGroupElement, elem);
}
/// <summary>
/// Determine Row and Column Count, and ColumnWidths
/// </summary>
/// <returns></returns>
private double CalculateCountAndWidth()
{
//Columns
if (_columns.Count > 0)
{
_columnCount = _columns.Count;
}
else
{
foreach (CssBox b in _allRows)
{
_columnCount = Math.Max(_columnCount, b.Boxes.Count);
}
}
//Initialize column widths array with NaNs
_columnWidths = new double[_columnCount];
for (int i = 0; i < _columnWidths.Length; i++)
{
_columnWidths[i] = double.NaN;
}
double availCellSpace = GetAvailableCellWidth();
if (_columns.Count > 0)
{
// Fill ColumnWidths array by scanning column widths
for (int i = 0; i < _columns.Count; i++)
{
CssLength len = new CssLength(_columns[i].Width); //Get specified width
if (len.Number > 0) //If some width specified
{
if (len.IsPercentage) //Get width as a percentage
{
_columnWidths[i] = CssValueParser.ParseNumber(_columns[i].Width, availCellSpace);
}
else if (len.Unit == CssUnit.Pixels || len.Unit == CssUnit.None)
{
_columnWidths[i] = len.Number; //Get width as an absolute-pixel value
}
}
}
}
else
{
// Fill ColumnWidths array by scanning width in table-cell definitions
foreach (CssBox row in _allRows)
{
//Check for column width in table-cell definitions
for (int i = 0; i < _columnCount; i++)
{
if (i < 20 || double.IsNaN(_columnWidths[i])) // limit column width check
{
if (i < row.Boxes.Count && row.Boxes[i].Display == CssConstants.TableCell)
{
double len = CssValueParser.ParseLength(row.Boxes[i].Width, availCellSpace, row.Boxes[i]);
if (len > 0) //If some width specified
{
int colspan = GetColSpan(row.Boxes[i]);
len /= Convert.ToSingle(colspan);
for (int j = i; j < i + colspan; j++)
{
_columnWidths[j] = double.IsNaN(_columnWidths[j]) ? len : Math.Max(_columnWidths[j], len);
}
}
}
}
}
}
}
return(availCellSpace);
}
/// <summary>
/// Gets the span attribute of the tag of the specified box
/// </summary>
/// <param name="b"></param>
private static int GetSpan(CssBox b)
{
double f = CssValueParser.ParseNumber(b.GetAttribute("span"), 1);
return(Math.Max(1, Convert.ToInt32(f)));
}
/// <summary>
/// Write the given html tag with all its attributes and styles.
/// </summary>
/// <param name="sb">the string builder to write html into</param>
/// <param name="box">the css box with the html tag to write</param>
/// <param name="indent">the indent to use for nice formating</param>
/// <param name="styleGen">Controls the way styles are generated when html is generated</param>
private static void WriteHtmlTag(StringBuilder sb, CssBox box, int indent, HtmlGenerationStyle styleGen)
{
sb.Append(new string(' ', indent * 4));
sb.AppendFormat("<{0}", box.HtmlTag.Name);
// collect all element style properties incliding from stylesheet
var tagStyles = new Dictionary <string, string>();
var tagCssBlock = box.HtmlContainer.CssData.GetCssBlock(box.HtmlTag.Name);
if (tagCssBlock != null)
{
// atodo: handle selectors
foreach (var cssBlock in tagCssBlock)
{
foreach (var prop in cssBlock.Properties)
{
tagStyles[prop.Key] = prop.Value;
}
}
}
if (box.HtmlTag.Attributes.Count > 0)
{
sb.Append(" ");
foreach (var att in box.HtmlTag.Attributes)
{
// handle image tags by inserting the image using base64 data
if (box.HtmlTag.Name == "img" && att.Key == "src" && (att.Value.StartsWith("property") || att.Value.StartsWith("method")))
{
var img = CssValueParser.GetImage(att.Value, box.HtmlContainer.Bridge);
if (img != null)
{
using (var buffer = new MemoryStream())
{
img.Save(buffer, ImageFormat.Png);
var base64 = Convert.ToBase64String(buffer.ToArray());
sb.AppendFormat("{0}=\"data:image/png;base64, {1}\" ", att.Key, base64);
}
}
}
else if (styleGen == HtmlGenerationStyle.Inline && att.Key == HtmlConstants.Style)
{
// if inline style add the styles to the collection
var block = CssParser.ParseCssBlockImp(box.HtmlTag.Name, box.HtmlTag.Attributes["style"]);
foreach (var prop in block.Properties)
{
tagStyles[prop.Key] = prop.Value;
}
}
else if (styleGen == HtmlGenerationStyle.Inline && att.Key == HtmlConstants.Class)
{
// if inline style convert the style class to actual properties and add to collection
var cssBlocks = box.HtmlContainer.CssData.GetCssBlock("." + att.Value);
if (cssBlocks != null)
{
// atodo: handle selectors
foreach (var cssBlock in cssBlocks)
{
foreach (var prop in cssBlock.Properties)
{
tagStyles[prop.Key] = prop.Value;
}
}
}
}
else
{
sb.AppendFormat("{0}=\"{1}\" ", att.Key, att.Value);
}
}
sb.Remove(sb.Length - 1, 1);
}
// if inline style insert the style tag with all collected style properties
if (styleGen == HtmlGenerationStyle.Inline && tagStyles.Count > 0)
{
sb.Append(" style=\"");
foreach (var style in tagStyles)
{
sb.AppendFormat("{0}: {1}; ", style.Key, style.Value);
}
sb.Remove(sb.Length - 1, 1);
sb.Append("\"");
}
sb.AppendFormat("{0}>", box.HtmlTag.IsSingle ? "/" : "");
sb.AppendLine();
}
/// <summary>
/// Analyzes the Table and assigns values to this CssTable object.
/// To be called from the constructor
/// </summary>
private void Analyze(Graphics g)
{
#region Assign box kinds
foreach (CssBox box in TableBox.Boxes)
{
switch (box.Display)
{
case CssConstants.TableCaption:
_caption = box;
break;
case CssConstants.TableColumn:
for (int i = 0; i < GetSpan(box); i++)
{
Columns.Add(CreateColumn(box));
}
break;
case CssConstants.TableColumnGroup:
if (box.Boxes.Count == 0)
{
int gspan = GetSpan(box);
for (int i = 0; i < gspan; i++)
{
Columns.Add(CreateColumn(box));
}
}
else
{
foreach (CssBox bb in box.Boxes)
{
int bbspan = GetSpan(bb);
for (int i = 0; i < bbspan; i++)
{
Columns.Add(CreateColumn(bb));
}
}
}
break;
case CssConstants.TableFooterGroup:
if (FooterBox != null)
{
BodyRows.Add(box);
}
else
{
_footerBox = box;
}
break;
case CssConstants.TableHeaderGroup:
if (HeaderBox != null)
{
BodyRows.Add(box);
}
else
{
_headerBox = box;
}
break;
case CssConstants.TableRow:
BodyRows.Add(box);
break;
case CssConstants.TableRowGroup:
foreach (CssBox childBox in box.Boxes)
{
if (childBox.Display == CssConstants.TableRow)
{
BodyRows.Add(childBox);
}
}
break;
}
}
#endregion
#region Gather AllRows
if (HeaderBox != null)
{
_allRows.AddRange(HeaderBox.Boxes);
}
_allRows.AddRange(BodyRows);
if (FooterBox != null)
{
_allRows.AddRange(FooterBox.Boxes);
}
#endregion
#region Insert EmptyBoxes for vertical cell spanning
if (!TableBox._tableFixed)
{
int currow = 0;
int curcol = 0;
List <CssBox> rows = BodyRows;
foreach (CssBox row in rows)
{
curcol = 0;
for (int k = 0; k < row.Boxes.Count; k++)
{
CssBox cell = row.Boxes[k];
int rowspan = GetRowSpan(cell);
int realcol = GetCellRealColumnIndex(row, cell); //Real column of the cell
for (int i = currow + 1; i < currow + rowspan; i++)
{
int colcount = 0;
for (int j = 0; j <= rows[i].Boxes.Count; j++)
{
if (colcount == realcol)
{
rows[i].Boxes.Insert(colcount, new CssSpacingBox(TableBox, ref cell, currow));
break;
}
colcount++;
realcol -= GetColSpan(rows[i].Boxes[j]) - 1;
}
}
curcol++;
}
currow++;
}
TableBox._tableFixed = true;
}
#endregion
#region Determine Row and Column Count, and ColumnWidths
//Rows
_rowCount = BodyRows.Count + (HeaderBox != null ? HeaderBox.Boxes.Count : 0) + (FooterBox != null ? FooterBox.Boxes.Count : 0);
//Columns
if (Columns.Count > 0)
{
_columnCount = Columns.Count;
}
else
{
foreach (CssBox b in AllRows) //Check trhough rows
{
_columnCount = Math.Max(_columnCount, b.Boxes.Count);
}
}
//Initialize column widths array
_columnWidths = new float[_columnCount];
//Fill them with NaNs
for (int i = 0; i < _columnWidths.Length; i++)
{
_columnWidths[i] = float.NaN;
}
float availCellSpace = GetAvailableCellWidth();
if (Columns.Count > 0)
{
#region Fill ColumnWidths array by scanning column widths
for (int i = 0; i < Columns.Count; i++)
{
CssLength len = new CssLength(Columns[i].Width); //Get specified width
if (len.Number > 0) //If some width specified
{
if (len.IsPercentage) //Get width as a percentage
{
ColumnWidths[i] = CssValueParser.ParseNumber(Columns[i].Width, availCellSpace);
}
else if (len.Unit == CssUnit.Pixels || len.Unit == CssUnit.None)
{
ColumnWidths[i] = len.Number; //Get width as an absolute-pixel value
}
}
}
#endregion
}
else
{
#region Fill ColumnWidths array by scanning width in table-cell definitions
foreach (CssBox row in AllRows)
{
//Check for column width in table-cell definitions
for (int i = 0; i < _columnCount; i++)
{
if (float.IsNaN(ColumnWidths[i]) && //Check if no width specified for column
i < row.Boxes.Count && //And there's a box to check
row.Boxes[i].Display == CssConstants.TableCell) //And the box is a table-cell
{
CssLength len = new CssLength(row.Boxes[i].Width); //Get specified width
if (len.Number > 0) //If some width specified
{
int colspan = GetColSpan(row.Boxes[i]);
float flen = 0f;
if (len.IsPercentage)//Get width as a percentage
{
flen = CssValueParser.ParseNumber(row.Boxes[i].Width, availCellSpace);
}
else if (len.Unit == CssUnit.Pixels || len.Unit == CssUnit.None)
{
flen = len.Number; //Get width as an absolute-pixel value
}
flen /= Convert.ToSingle(colspan);
for (int j = i; j < i + colspan; j++)
{
ColumnWidths[j] = flen;
}
}
}
}
}
#endregion
}
#endregion
#region Determine missing Column widths
if (WidthSpecified) //If a width was specified,
{
//Assign NaNs equally with space left after gathering not-NaNs
int numberOfNans = 0;
float occupedSpace = 0f;
//Calculate number of NaNs and occuped space
foreach (float t in ColumnWidths)
{
if (float.IsNaN(t))
{
numberOfNans++;
}
else
{
occupedSpace += t;
}
}
//Determine width that will be assigned to un asigned widths
float nanWidth = (availCellSpace - occupedSpace) / Convert.ToSingle(numberOfNans);
for (int i = 0; i < ColumnWidths.Length; i++)
{
if (float.IsNaN(ColumnWidths[i]))
{
ColumnWidths[i] = nanWidth;
}
}
}
else
{
//Assign NaNs using full width
float[] maxFullWidths = new float[ColumnWidths.Length];
//Get the maximum full length of NaN boxes
foreach (CssBox row in AllRows)
{
for (int i = 0; i < row.Boxes.Count; i++)
{
int col = GetCellRealColumnIndex(row, row.Boxes[i]);
if (float.IsNaN(ColumnWidths[col]) &&
i < row.Boxes.Count &&
GetColSpan(row.Boxes[i]) == 1)
{
maxFullWidths[col] = Math.Max(maxFullWidths[col], row.Boxes[i].GetFullWidth(g));
}
}
}
for (int i = 0; i < ColumnWidths.Length; i++)
{
if (float.IsNaN(ColumnWidths[i]))
{
ColumnWidths[i] = maxFullWidths[i];
}
}
}
#endregion
#region Reduce widths if necessary
int curCol = 0;
//While table width is larger than it should, and width is reductable
while (GetWidthSum() > GetAvailableWidth() && CanReduceWidth())
{
while (!CanReduceWidth(curCol))
{
curCol++;
}
ColumnWidths[curCol] -= 1f;
curCol++;
if (curCol >= ColumnWidths.Length)
{
curCol = 0;
}
}
#endregion
#region Check for minimum sizes (increment widths if necessary)
foreach (CssBox row in AllRows)
{
foreach (CssBox cell in row.Boxes)
{
int colspan = GetColSpan(cell);
int col = GetCellRealColumnIndex(row, cell);
int affectcol = col + colspan - 1;
if (ColumnWidths[col] < ColumnMinWidths[col])
{
float diff = ColumnMinWidths[col] - ColumnWidths[col];
ColumnWidths[affectcol] = ColumnMinWidths[affectcol];
if (col < ColumnWidths.Length - 1)
{
ColumnWidths[col + 1] -= diff;
}
}
}
}
#endregion
#region Set table padding
//Ensure there's no padding
TableBox.PaddingLeft = TableBox.PaddingTop = TableBox.PaddingRight = TableBox.PaddingBottom = "0";
#endregion
#region Layout cells
//Actually layout cells!
float startx = TableBox.ClientLeft + HorizontalSpacing;
float starty = TableBox.ClientTop + VerticalSpacing;
float curx = startx;
float cury = starty;
float maxRight = startx;
float maxBottom = 0f;
int currentrow = 0;
for (int i = 0; i < AllRows.Count; i++)
{
var row = AllRows[i];
curx = startx;
curCol = 0;
for (int j = 0; j < row.Boxes.Count; j++)
{
CssBox cell = row.Boxes[j];
if (curCol >= ColumnWidths.Length)
{
break;
}
int rowspan = GetRowSpan(cell);
var columnIndex = GetCellRealColumnIndex(row, cell);
float width = GetCellWidth(columnIndex, cell);
cell.Location = new PointF(curx, cury);
cell.Size = new SizeF(width, 0f);
cell.MeasureBounds(g); //That will automatically set the bottom of the cell
//Alter max bottom only if row is cell's row + cell's rowspan - 1
CssSpacingBox sb = cell as CssSpacingBox;
if (sb != null)
{
if (sb.EndRow == currentrow)
{
maxBottom = Math.Max(maxBottom, sb.ExtendedBox.ActualBottom);
}
}
else if (rowspan == 1)
{
maxBottom = Math.Max(maxBottom, cell.ActualBottom);
}
maxRight = Math.Max(maxRight, cell.ActualRight);
curCol++;
curx = cell.ActualRight + HorizontalSpacing;
}
foreach (CssBox cell in row.Boxes)
{
CssSpacingBox spacer = cell as CssSpacingBox;
if (spacer == null && GetRowSpan(cell) == 1)
{
cell.ActualBottom = maxBottom;
CssLayoutEngine.ApplyCellVerticalAlignment(g, cell);
}
else if (spacer != null && spacer.EndRow == currentrow)
{
spacer.ExtendedBox.ActualBottom = maxBottom;
CssLayoutEngine.ApplyCellVerticalAlignment(g, spacer.ExtendedBox);
}
}
cury = maxBottom + VerticalSpacing;
currentrow++;
}
TableBox.ActualRight = maxRight + HorizontalSpacing + TableBox.ActualBorderRightWidth;
TableBox.ActualBottom = maxBottom + VerticalSpacing + TableBox.ActualBorderBottomWidth;
#endregion
}
/// <summary>
/// Creates a new CssLength from a length specified on a CSS style sheet or fragment
/// </summary>
/// <param name="length">Length as specified in the Style Sheet or style fragment</param>
public CssLength(string length)
{
_length = length;
_number = 0f;
_unit = CssUnit.None;
_isPercentage = false;
//Return zero if no length specified, zero specified
if (string.IsNullOrEmpty(length) || length == "0")
{
return;
}
//If percentage, use ParseNumber
if (length.EndsWith("%"))
{
_number = CssValueParser.ParseNumber(length, 1);
_isPercentage = true;
return;
}
//If no units, has error
if (length.Length < 3)
{
double.TryParse(length, out _number);
_hasError = true;
return;
}
//Get units of the length
string u = length.Substring(length.Length - 2, 2);
//Number of the length
string number = length.Substring(0, length.Length - 2);
//TODO: Units behave different in paper and in screen!
switch (u)
{
case CssConstants.Em:
_unit = CssUnit.Ems;
_isRelative = true;
break;
case CssConstants.Ex:
_unit = CssUnit.Ex;
_isRelative = true;
break;
case CssConstants.Px:
_unit = CssUnit.Pixels;
_isRelative = true;
break;
case CssConstants.Mm:
_unit = CssUnit.Milimeters;
break;
case CssConstants.Cm:
_unit = CssUnit.Centimeters;
break;
case CssConstants.In:
_unit = CssUnit.Inches;
break;
case CssConstants.Pt:
_unit = CssUnit.Points;
break;
case CssConstants.Pc:
_unit = CssUnit.Picas;
break;
default:
_hasError = true;
return;
}
if (!double.TryParse(number, NumberStyles.Number, NumberFormatInfo.InvariantInfo, out _number))
{
_hasError = true;
}
}
static void CreateSvgLinearGradient(SvgElement parentNode, HtmlElement elem)
{
//linear gradient definition
SvgLinearGradient linearGradient = new SvgLinearGradient(elem);
foreach (WebDom.DomAttribute attr in elem.GetAttributeIterForward())
{
WebDom.WellknownName wellknownName = (WebDom.WellknownName)attr.LocalNameIndex;
switch (wellknownName)
{
case WellknownName.Svg_X1:
{
linearGradient.X1 = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
case WellknownName.Svg_X2:
{
linearGradient.X2 = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
case WellknownName.Svg_Y1:
{
linearGradient.Y1 = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
case WellknownName.Svg_Y2:
{
linearGradient.Y2 = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
}
}
//------------------------------------------------------------
int j = elem.ChildrenCount;
List <StopColorPoint> stopColorPoints = new List <StopColorPoint>(j);
for (int i = 0; i < j; ++i)
{
HtmlElement node = elem.GetChildNode(i) as HtmlElement;
if (node == null)
{
continue;
}
switch (node.WellknownElementName)
{
case WellKnownDomNodeName.svg_stop:
{
//stop point
StopColorPoint stopPoint = new StopColorPoint();
foreach (WebDom.DomAttribute attr in node.GetAttributeIterForward())
{
WebDom.WellknownName wellknownName = (WebDom.WellknownName)attr.LocalNameIndex;
switch (wellknownName)
{
case WellknownName.Svg_StopColor:
{
stopPoint.StopColor = CssValueParser.GetActualColor(attr.Value);
}
break;
case WellknownName.Svg_Offset:
{
stopPoint.Offset = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
}
}
stopColorPoints.Add(stopPoint);
}
break;
}
}
}
static void CreateSvgPath(SvgElement parentNode, HtmlElement elem)
{
SvgPathSpec spec = new SvgPathSpec();
SvgPath svgPath = new SvgPath(spec, elem);
parentNode.AddChild(svgPath);
foreach (WebDom.DomAttribute attr in elem.GetAttributeIterForward())
{
WebDom.WellknownName wellknownName = (WebDom.WellknownName)attr.LocalNameIndex;
switch (wellknownName)
{
case WebDom.WellknownName.Svg_X:
{
spec.X = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Y:
{
spec.Y = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
case WebDom.WellknownName.Width:
{
spec.Width = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
case WebDom.WellknownName.Height:
{
spec.Height = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Fill:
{
spec.ActualColor = CssValueParser.GetActualColor(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Stroke:
{
spec.StrokeColor = CssValueParser.GetActualColor(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Stroke_Width:
{
spec.StrokeWidth = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Transform:
{
//TODO: parse svg transform function
}
break;
default:
{
//other attrs
switch (attr.Name)
{
case "d":
{
//parse vertex commands
Svg.Pathing.SvgPathDataParser parser = new Svg.Pathing.SvgPathDataParser();
svgPath.Segments = parser.Parse(attr.Value.ToCharArray());
}
break;
}
}
break;
}
}
}
static void CreateSvgImage(SvgElement parentNode, HtmlElement elem)
{
SvgImageSpec spec = new SvgImageSpec();
SvgImage svgImage = new SvgImage(spec, elem);
parentNode.AddChild(svgImage);
foreach (WebDom.DomAttribute attr in elem.GetAttributeIterForward())
{
WebDom.WellknownName wellknownName = (WebDom.WellknownName)attr.LocalNameIndex;
switch (wellknownName)
{
case WebDom.WellknownName.Svg_X:
{
spec.X = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Y:
{
spec.Y = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
case WebDom.WellknownName.Width:
{
spec.Width = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
case WebDom.WellknownName.Height:
{
spec.Height = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Fill:
{
spec.ActualColor = CssValueParser.GetActualColor(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Stroke:
{
spec.StrokeColor = CssValueParser.GetActualColor(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Stroke_Width:
{
spec.StrokeWidth = UserMapUtil.ParseGenericLength(attr.Value);
}
break;
case WebDom.WellknownName.Svg_Transform:
{
//TODO: parse svg transform function
}
break;
case WellknownName.Href:
{
//image src***
spec.ImageSrc = attr.Value;
}
break;
default:
{
}
break;
}
}
}
