/// <summary>
/// Static constructor and initialization
/// </summary>
static CssBox()
{
#region Initialize _properties, _inheritables and _defaults Dictionaries
_properties = new Dictionary<string, PropertyInfo>();
_defaults = new Dictionary<string, string>();
_inheritables = new List<PropertyInfo>();
_cssproperties = new List<PropertyInfo>();
PropertyInfo[] props = typeof(CssBox).GetProperties();
for (int i = 0; i < props.Length; i++)
{
CssPropertyAttribute att = Attribute.GetCustomAttribute(props[i], typeof(CssPropertyAttribute)) as CssPropertyAttribute;
if (att != null)
{
_properties.Add(att.Name, props[i]);
_defaults.Add(att.Name, GetDefaultValue(props[i]));
_cssproperties.Add(props[i]);
CssPropertyInheritedAttribute inh = Attribute.GetCustomAttribute(props[i], typeof(CssPropertyInheritedAttribute)) as CssPropertyInheritedAttribute;
if (inh != null)
{
_inheritables.Add(props[i]);
}
}
}
#endregion
Empty = new CssBox();
}
/// <summary>
/// Parses a length. Lengths are followed by an unit identifier (e.g. 10px, 3.1em)
/// </summary>
/// <param name="length">Specified length</param>
/// <param name="hundredPercent">Equivalent to 100 percent when length is percentage</param>
/// <param name="box"></param>
/// <param name="useParentsEm"></param>
/// <param name="returnPoints">Allows the return float to be in points. If false, result will be pixels</param>
/// <returns></returns>
public static float ParseLength(string length, float hundredPercent, CssBox box, float emFactor, bool returnPoints)
{
//Return zero if no length specified, zero specified
if (string.IsNullOrEmpty(length) || length == "0") return 0f;
//If percentage, use ParseNumber
if (length.EndsWith("%")) return ParseNumber(length, hundredPercent);
//If no units, return zero
if (length.Length < 3) return 0f;
//Get units of the length
string unit = length.Substring(length.Length - 2, 2);
//Factor will depend on the unit
float factor = 1f;
//Number of the length
string number = length.Substring(0, length.Length - 2);
//TODO: Units behave different in paper and in screen!
switch (unit)
{
case CssConstants.Em:
factor = emFactor;
break;
case CssConstants.Px:
factor = 1f;
break;
case CssConstants.Mm:
factor = 3f; //3 pixels per millimeter
break;
case CssConstants.Cm:
factor = 37f; //37 pixels per centimeter
break;
case CssConstants.In:
factor = 96f; //96 pixels per inch
break;
case CssConstants.Pt:
factor = 96f / 72f; // 1 point = 1/72 of inch
if (returnPoints)
{
return ParseNumber(number, hundredPercent);
}
break;
case CssConstants.Pc:
factor = 96f / 72f * 12f; // 1 pica = 12 points
break;
default:
factor = 0f;
break;
}
return factor * ParseNumber(number, hundredPercent);
}
/// <summary>
/// Creates a new LineBox
/// </summary>
public CssLineBox(CssBox ownerBox)
{
_rects = new Dictionary<CssBox, RectangleF>();
_relatedBoxes = new List<CssBox>();
_words = new List<CssBoxWord>();
_ownerBox = ownerBox;
_ownerBox.LineBoxes.Add(this);
}
public SpacingBox(CssBox tableBox, ref CssBox extendedBox, int startRow)
: base(tableBox, new HtmlTag("<none colspan=" + extendedBox.GetAttribute("colspan", "1") + ">"))
{
ExtendedBox = extendedBox;
Display = CssConstants.None;
_startRow = startRow;
_endRow = startRow + int.Parse(extendedBox.GetAttribute("rowspan", "1")) - 1;
}
public CssTable(CssBox tableBox, Graphics g)
:this()
{
if (!(tableBox.Display == CssConstants.Table || tableBox.Display == CssConstants.InlineTable))
throw new ArgumentException("Box is not a table", "tableBox");
_tableBox = tableBox;
MeasureWords(tableBox, g);
Analyze(g);
}
public CssAnonymousBlockBox(CssBox parent, CssBox insertBefore)
: this(parent)
{
int index = parent.Boxes.IndexOf(insertBefore);
if (index < 0)
{
throw new Exception("insertBefore box doesn't exist on parent");
}
parent.Boxes.Remove(this);
parent.Boxes.Insert(index, this);
}
/// <summary>
/// Creates line boxes for the specified blockbox
/// </summary>
/// <param name="g"></param>
/// <param name="blockBox"></param>
public static void CreateLineBoxes(Graphics g, CssBox blockBox)
{
blockBox.LineBoxes.Clear();
float maxRight = blockBox.ActualRight - blockBox.ActualPaddingRight - blockBox.ActualBorderRightWidth;
//Get the start x and y of the blockBox
float startx = blockBox.Location.X + blockBox.ActualPaddingLeft - 0 + blockBox.ActualBorderLeftWidth; //TODO: Check for floats
float starty = blockBox.Location.Y + blockBox.ActualPaddingTop - 0 + blockBox.ActualBorderTopWidth;
float curx = startx + blockBox.ActualTextIndent;
float cury = starty;
//Reminds the maximum bottom reached
float maxBottom = starty;
//Extra amount of spacing that should be applied to lines when breaking them.
float lineSpacing = 0f;
//First line box
CssLineBox line = new CssLineBox(blockBox);
//Flow words and boxes
FlowBox(g, blockBox, blockBox, maxRight, lineSpacing, startx,ref line, ref curx, ref cury, ref maxBottom);
//Gets the rectangles foreach linebox
foreach (CssLineBox linebox in blockBox.LineBoxes)
{
BubbleRectangles(blockBox, linebox);
linebox.AssignRectanglesToBoxes();
ApplyAlignment(g, linebox);
if (blockBox.Direction == CssConstants.Rtl) ApplyRightToLeft(linebox);
//linebox.DrawRectangles(g);
}
blockBox.ActualBottom = maxBottom + blockBox.ActualPaddingBottom + blockBox.ActualBorderBottomWidth;
}
/// <summary>
/// Gets the cell column index checking its position and other cells colspans
/// </summary>
/// <param name="row"></param>
/// <param name="cell"></param>
/// <returns></returns>
private int GetCellRealColumnIndex(CssBox row, CssBox cell)
{
int i = 0;
foreach (CssBox b in row.Boxes)
{
if (b.Equals(cell)) break;
i += GetColSpan(b);
}
return i;
}
/// <summary>
/// Gets the spanned width of a cell
/// (With of all columns it spans minus one)
/// </summary>
/// <param name="row"></param>
/// <param name="cell"></param>
/// <param name="realcolindex"></param>
/// <param name="colspan"></param>
/// <returns></returns>
private float GetSpannedMinWidth(CssBox row, CssBox cell, int realcolindex, int colspan)
{
float w = 0f;
for (int i = realcolindex; i < row.Boxes.Count || i < realcolindex + colspan - 1; i++)
{
w += ColumnMinWidths[i];
}
return w;
}
/// <summary>
/// Analyzes the Table and assigns values to this CssTable object.
/// To be called from the constructor
/// </summary>
private void Analyze(Graphics g)
{
float availSpace = GetAvailableWidth();
float availCellSpace = float.NaN; //Will be set later
#region Assign box kinds
foreach (CssBox b in TableBox.Boxes)
{
b.RemoveAnonymousSpaces();
switch (b.Display)
{
case CssConstants.TableCaption:
_caption = b;
break;
case CssConstants.TableColumn:
for (int i = 0; i < GetSpan(b); i++)
{
Columns.Add(CreateColumn(b));
}
break;
case CssConstants.TableColumnGroup:
if (b.Boxes.Count == 0)
{
int gspan = GetSpan(b);
for (int i = 0; i < gspan; i++)
{
Columns.Add(CreateColumn(b));
}
}
else
{
foreach (CssBox bb in b.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(b);
else
_footerBox = b;
break;
case CssConstants.TableHeaderGroup:
if (HeaderBox != null)
BodyRows.Add(b);
else
_headerBox = b;
break;
case CssConstants.TableRow:
BodyRows.Add(b);
break;
case CssConstants.TableRowGroup:
foreach (CssBox bb in b.Boxes)
if (b.Display == CssConstants.TableRow)
BodyRows.Add(b);
break;
default:
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)
{
row.RemoveAnonymousSpaces();
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 SpacingBox(TableBox, ref cell, currow));
break;
}
colcount++;
realcol -= GetColSpan(rows[i].Boxes[j]) - 1;
}
} // End for (int i = currow + 1; i < currow + rowspan; i++)
curcol++;
} /// End foreach (Box cell in row.Boxes)
currow++;
} /// End foreach (Box row in rows)
TableBox.TableFixed = true;
} /// End if (!TableBox.TableFixed)
#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;
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] = CssValue.ParseNumber(Columns[i].Width, availCellSpace);
}
else if (len.Unit == CssLength.CssUnit.Pixels || len.Unit == CssLength.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 = CssValue.ParseNumber(row.Boxes[i].Width, availCellSpace);
}
else if (len.Unit == CssLength.CssUnit.Pixels || len.Unit == CssLength.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
for (int i = 0; i < ColumnWidths.Length; i++)
if (float.IsNaN(ColumnWidths[i]))
numberOfNans++;
else
occupedSpace += ColumnWidths[i];
//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;
float reduceAmount = 1f;
//While table width is larger than it should, and width is reductable
while (GetWidthSum() > GetAvailableWidth() && CanReduceWidth())
{
while (!CanReduceWidth(curCol)) curCol++;
ColumnWidths[curCol] -= reduceAmount;
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
TableBox.Padding = "0"; //Ensure there's no padding
#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;
foreach (CssBox row in AllRows)
{
if (row is CssAnonymousSpaceBlockBox || row is CssAnonymousSpaceBox) continue;
curx = startx;
curCol = 0;
foreach (CssBox cell in row.Boxes)
{
if (curCol >= ColumnWidths.Length) break;
int rowspan = GetRowSpan(cell);
float width = GetCellWidth(GetCellRealColumnIndex(row, cell), 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
SpacingBox sb = cell as SpacingBox;
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)
{
SpacingBox spacer = cell as SpacingBox;
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>
/// Applies style to all boxes in the tree
/// </summary>
private void CascadeStyles(CssBox startBox)
{
bool someBlock = false;
foreach (CssBox b in startBox.Boxes)
{
b.InheritStyle();
if (b.HtmlTag != null)
{
//Check if tag name matches with a defined class
if (MediaBlocks["all"].ContainsKey(b.HtmlTag.TagName))
{
MediaBlocks["all"][b.HtmlTag.TagName].AssignTo(b);
}
//Check if class="" attribute matches with a defined style
if (b.HtmlTag.HasAttribute("class") &&
MediaBlocks["all"].ContainsKey("." + b.HtmlTag.Attributes["class"]))
{
MediaBlocks["all"]["." + b.HtmlTag.Attributes["class"]].AssignTo(b);
}
b.HtmlTag.TranslateAttributes(b);
//Check for the style="" attribute
if (b.HtmlTag.HasAttribute("style"))
{
CssBlock block = new CssBlock(b.HtmlTag.Attributes["style"]);
block.AssignTo(b);
}
//Check for the <style> tag
if (b.HtmlTag.TagName.Equals("style", StringComparison.CurrentCultureIgnoreCase) &&
b.Boxes.Count == 1)
{
FeedStyleSheet(b.Boxes[0].Text);
}
//Check for the <link rel=stylesheet> tag
if (b.HtmlTag.TagName.Equals("link", StringComparison.CurrentCultureIgnoreCase) &&
b.GetAttribute("rel", string.Empty).Equals("stylesheet", StringComparison.CurrentCultureIgnoreCase))
{
FeedStyleSheet(CssValue.GetStyleSheet(b.GetAttribute("href", string.Empty)));
}
}
CascadeStyles(b);
}
if (someBlock)
{
foreach (CssBox box in startBox.Boxes)
{
box.Display = CssConstants.Block;
}
}
}
/// <summary>
/// Scans the boxes (non-deeply) of the box, and returns groups of contiguous inline boxes.
/// </summary>
/// <param name="b"></param>
/// <returns></returns>
private List<List<CssBox>> BlockCorrection_GetInlineGroups(CssBox box)
{
List<List<CssBox>> result = new List<List<CssBox>>();
List<CssBox> current = null;
//Scan boxes
for (int i = 0; i < box.Boxes.Count; i++)
{
CssBox b = box.Boxes[i];
//If inline, add it to the current group
if (b.Display == CssConstants.Inline)
{
if (current == null)
{
current = new List<CssBox>();
result.Add(current);
}
current.Add(b);
}
else
{
current = null;
}
}
//If last list contains nothing, erase it
if (result.Count > 0 && result[result.Count - 1].Count == 0)
{
result.RemoveAt(result.Count - 1);
}
return result;
}
/// <summary>
/// Recursively measures words inside the box
/// </summary>
/// <param name="b"></param>
/// <param name="g"></param>
private void MeasureWords(CssBox b, Graphics g)
{
if (b == null) return;
foreach (CssBox bb in b.Boxes)
{
bb.MeasureWordsSize(g);
MeasureWords(bb, g);
}
}
/// <summary>
/// Gets the rowspan of the specified box
/// </summary>
/// <param name="b"></param>
private int GetRowSpan(CssBox b)
{
string att = b.GetAttribute("rowspan", "1");
int rowspan;
if (!int.TryParse(att, out rowspan))
{
return 1;
}
return rowspan;
}
/// <summary>
/// Rounds the specified point
/// </summary>
/// <param name="p"></param>
/// <param name="b"></param>
/// <returns></returns>
private static PointF RoundP(PointF p, CssBox b)
{
//HACK: Don't round if in printing mode
//return Point.Round(p);
return p;
}
/// <summary>
/// Creates the corner to place with the borders
/// </summary>
/// <param name="outer"></param>
/// <param name="inner"></param>
/// <param name="startAngle"></param>
/// <param name="sweepAngle"></param>
/// <returns></returns>
private static GraphicsPath CreateCorner(CssBox b, RectangleF r, int cornerIndex)
{
GraphicsPath corner = new GraphicsPath();
RectangleF outer = RectangleF.Empty;
RectangleF inner = RectangleF.Empty;
float start1 = 0;
float start2 = 0;
switch (cornerIndex)
{
case 1:
outer = new RectangleF(r.Left, r.Top, b.ActualCornerNW, b.ActualCornerNW);
inner = RectangleF.FromLTRB(outer.Left + b.ActualBorderLeftWidth, outer.Top + b.ActualBorderTopWidth, outer.Right, outer.Bottom);
start1 = 180;
start2 = 270;
break;
case 2:
outer = new RectangleF(r.Right - b.ActualCornerNE, r.Top, b.ActualCornerNE, b.ActualCornerNE);
inner = RectangleF.FromLTRB(outer.Left, outer.Top + b.ActualBorderTopWidth, outer.Right - b.ActualBorderRightWidth, outer.Bottom);
outer.X -= outer.Width;
inner.X -= inner.Width;
start1 = -90;
start2 = 0;
break;
case 3:
outer = RectangleF.FromLTRB(r.Right - b.ActualCornerSE, r.Bottom - b.ActualCornerSE, r.Right, r.Bottom);
inner = new RectangleF(outer.Left, outer.Top, outer.Width - b.ActualBorderRightWidth, outer.Height - b.ActualBorderBottomWidth);
outer.X -= outer.Width;
outer.Y -= outer.Height;
inner.X -= inner.Width;
inner.Y -= inner.Height;
start1 = 0;
start2 = 90;
break;
case 4:
outer = new RectangleF(r.Left, r.Bottom - b.ActualCornerSW, b.ActualCornerSW, b.ActualCornerSW);
inner = RectangleF.FromLTRB( r.Left + b.ActualBorderLeftWidth , outer.Top , outer.Right, outer.Bottom - b.ActualBorderBottomWidth);
start1 = 90;
start2 = 180;
outer.Y -= outer.Height;
inner.Y -= inner.Height;
break;
}
if (outer.Width <= 0f) outer.Width = 1f;
if (outer.Height <= 0f) outer.Height = 1f;
if (inner.Width <= 0f) inner.Width = 1f;
if (inner.Height <= 0f) inner.Height = 1f;
outer.Width *= 2; outer.Height *= 2;
inner.Width *= 2; inner.Height *= 2;
outer = RoundR(outer, b); inner = RoundR(inner, b);
corner.AddArc(outer, start1, 90);
corner.AddArc(inner, start2, -90);
corner.CloseFigure();
return corner;
}
public CssAnonymousSpaceBlockBox(CssBox parent, CssBox insertBefore)
: base(parent, insertBefore)
{ Display = CssConstants.None; }
public CssAnonymousSpaceBlockBox(CssBox parent)
: base(parent)
{ Display = CssConstants.None; }
public CssAnonymousBlockBox(CssBox parent)
: base(parent)
{
Display = CssConstants.Block;
}
/// <summary>
/// Gets the cells width, taking colspan and being in the specified column
/// </summary>
/// <param name="column"></param>
/// <param name="b"></param>
/// <returns></returns>
private float GetCellWidth(int column, CssBox b)
{
float colspan = Convert.ToSingle(GetColSpan(b));
float sum = 0f;
for (int i = column; i < column + colspan; i++)
{
if (column >= ColumnWidths.Length) break;
if (ColumnWidths.Length <= i) break;
sum += ColumnWidths[i];
}
sum += (colspan - 1) * HorizontalSpacing;
return sum; ;// -b.ActualBorderLeftWidth - b.ActualBorderRightWidth - b.ActualPaddingRight - b.ActualPaddingLeft;
}
/// <summary>
/// Gets the colspan of the specified box
/// </summary>
/// <param name="b"></param>
private int GetColSpan(CssBox b)
{
string att = b.GetAttribute("colspan", "1");
int colspan;
if (!int.TryParse(att, out colspan))
{
return 1;
}
return colspan;
}
/// <summary>
/// Gets the span attribute of the tag of the specified box
/// </summary>
/// <param name="b"></param>
private int GetSpan(CssBox b)
{
float f = CssValue.ParseNumber(b.GetAttribute("span"), 1);
return Math.Max(1, Convert.ToInt32(f));
}
/// <summary>
/// Recursively measures the specified box
/// </summary>
/// <param name="b"></param>
/// <param name="g"></param>
private void Measure(CssBox b, Graphics g)
{
if (b == null) return;
foreach (CssBox bb in b.Boxes)
{
bb.MeasureBounds(g);
Measure(bb, g);
}
}
internal CssBoxWord(CssBox owner)
{
_ownerBox = owner;
_word = string.Empty;
}
/// <summary>
/// Rounds the specified rectangle
/// </summary>
/// <param name="p"></param>
/// <param name="b"></param>
/// <returns></returns>
private static RectangleF RoundR(RectangleF r, CssBox b)
{
//HACK: Don't round if in printing mode
return Rectangle.Round(r);
}
/// <summary>
/// Makes block boxes be among only block boxes.
/// Inline boxes should live in a pool of Inline boxes only.
/// </summary>
/// <param name="startBox"></param>
private void BlockCorrection(CssBox startBox)
{
bool inlinesonly = startBox.ContainsInlinesOnly();
if (!inlinesonly)
{
List<List<CssBox>> inlinegroups = BlockCorrection_GetInlineGroups(startBox);
foreach (List<CssBox> group in inlinegroups)
{
if (group.Count == 0) continue;
if (group.Count == 1 && group[0] is CssAnonymousSpaceBox)
{
CssAnonymousSpaceBlockBox sbox = new CssAnonymousSpaceBlockBox(startBox, group[0]);
group[0].ParentBox = sbox;
}
else
{
CssAnonymousBlockBox newbox = new CssAnonymousBlockBox(startBox, group[0]);
foreach (CssBox inline in group)
{
inline.ParentBox = newbox;
}
}
}
}
foreach (CssBox b in startBox.Boxes)
{
BlockCorrection(b);
}
}
/// <summary>
/// Creates the column with the specified width
/// </summary>
/// <param name="width"></param>
/// <returns></returns>
private CssBox CreateColumn(CssBox modelBox)
{
return modelBox;
//Box b = new Box(null, new HtmlTag(string.Format("<COL style=\"width:{0}\" >", width)));
//b.Width = width;
//return b;
}
/// <summary>
/// Makes a border path
/// </summary>
/// <param name="border">Desired border</param>
/// <param name="b">Box wich the border corresponds</param>
/// <param name="isLineStart">Specifies if the border is for a starting line (no bevel on left)</param>
/// <param name="isLineEnd">Specifies if the border is for an ending line (no bevel on right)</param>
/// <returns>Beveled border path</returns>
public static GraphicsPath GetBorderPath(Border border, CssBox b, RectangleF r, bool isLineStart, bool isLineEnd)
{
PointF[] pts = new PointF[4];
float bwidth = 0;
GraphicsPath corner = null;
switch (border)
{
case Border.Top:
bwidth = b.ActualBorderTopWidth;
pts[0] = RoundP(new PointF(r.Left + b.ActualCornerNW, r.Top), b);
pts[1] = RoundP(new PointF(r.Right - b.ActualCornerNE, r.Top), b);
pts[2] = RoundP(new PointF(r.Right - b.ActualCornerNE, r.Top + bwidth), b);
pts[3] = RoundP(new PointF(r.Left + b.ActualCornerNW, r.Top + bwidth), b);
if (isLineEnd && b.ActualCornerNE == 0f) pts[2].X -= b.ActualBorderRightWidth;
if (isLineStart && b.ActualCornerNW == 0f) pts[3].X += b.ActualBorderLeftWidth;
if (b.ActualCornerNW > 0f) corner = CreateCorner(b, r, 1);
break;
case Border.Right:
bwidth = b.ActualBorderRightWidth;
pts[0] = RoundP(new PointF(r.Right - bwidth, r.Top + b.ActualCornerNE), b);
pts[1] = RoundP(new PointF(r.Right, r.Top + b.ActualCornerNE), b);
pts[2] = RoundP(new PointF(r.Right, r.Bottom - b.ActualCornerSE), b);
pts[3] = RoundP(new PointF(r.Right - bwidth, r.Bottom - b.ActualCornerSE), b);
if (b.ActualCornerNE == 0f) pts[0].Y += b.ActualBorderTopWidth;
if (b.ActualCornerSE == 0f) pts[3].Y -= b.ActualBorderBottomWidth;
if (b.ActualCornerNE > 0f) corner = CreateCorner(b, r, 2);
break;
case Border.Bottom:
bwidth = b.ActualBorderBottomWidth;
pts[0] = RoundP(new PointF(r.Left + b.ActualCornerSW, r.Bottom - bwidth), b);
pts[1] = RoundP(new PointF(r.Right - b.ActualCornerSE, r.Bottom - bwidth), b);
pts[2] = RoundP(new PointF(r.Right - b.ActualCornerSE, r.Bottom), b);
pts[3] = RoundP(new PointF(r.Left + b.ActualCornerSW, r.Bottom), b);
if (isLineStart && b.ActualCornerSW == 0f) pts[0].X += b.ActualBorderLeftWidth;
if (isLineEnd && b.ActualCornerSE == 0f) pts[1].X -= b.ActualBorderRightWidth;
if (b.ActualCornerSE > 0f) corner = CreateCorner(b, r, 3);
break;
case Border.Left:
bwidth = b.ActualBorderLeftWidth;
pts[0] = RoundP(new PointF(r.Left, r.Top + b.ActualCornerNW), b);
pts[1] = RoundP(new PointF(r.Left + bwidth, r.Top + b.ActualCornerNW), b);
pts[2] = RoundP(new PointF(r.Left + bwidth, r.Bottom - b.ActualCornerSW), b);
pts[3] = RoundP(new PointF(r.Left, r.Bottom - b.ActualCornerSW), b);
if (b.ActualCornerNW == 0f) pts[1].Y += b.ActualBorderTopWidth;
if (b.ActualCornerSW == 0f) pts[2].Y -= b.ActualBorderBottomWidth;
if (b.ActualCornerSW > 0f) corner = CreateCorner(b, r, 4);
break;
}
GraphicsPath path = new GraphicsPath(pts, new byte[] { (byte)PathPointType.Line, (byte)PathPointType.Line, (byte)PathPointType.Line, (byte)PathPointType.Line });
if (corner != null)
{
path.AddPath(corner, true);
}
return path;
}
/// <summary>
/// Creates a new BoxWord which represents an image
/// </summary>
/// <param name="owner"></param>
/// <param name="image"></param>
public CssBoxWord(CssBox owner, Image image)
: this(owner)
{
Image = image;
}
/// <summary>
/// Asigns the style on this block o the specified box
/// </summary>
/// <param name="b"></param>
public void AssignTo(CssBox b)
{
foreach (PropertyInfo prop in PropertyValues.Keys)
{
string value = PropertyValues[prop];
if (value == CssConstants.Inherit && b.ParentBox != null)
{
value = Convert.ToString(prop.GetValue(b.ParentBox, null));
}
prop.SetValue(b, value, null);
}
}
