/// <summary>
/// Converts an HTML length into a Css length
/// </summary>
/// <param name="htmlLength"></param>
/// <returns></returns>
private static string TranslateLength(string htmlLength)
{
CssLength len = new CssLength(htmlLength);
if (len.HasError)
{
return string.Format(NumberFormatInfo.InvariantInfo, "{0}px", htmlLength);
}
return htmlLength;
}
/// <summary>
/// On image load process is complete with image or without update the image box.
/// </summary>
/// <param name="image">the image loaded or null if failed</param>
/// <param name="rectangle">the source rectangle to draw in the image (empty - draw everything)</param>
/// <param name="async">is the callback was called async to load image call</param>
private void OnLoadImageComplete(RImage image, RRect rectangle, bool async)
{
_imageWord.Image = image;
_imageWord.ImageRectangle = rectangle;
_imageLoadingComplete = true;
_wordsSizeMeasured = false;
if (_imageLoadingComplete && image == null)
{
SetErrorBorder();
}
if (!HtmlContainer.AvoidImagesLateLoading || async)
{
var width = new CssLength(Width);
var height = new CssLength(Height);
var layout = (width.Number <= 0 || width.Unit != CssUnit.Pixels) || (height.Number <= 0 || height.Unit != CssUnit.Pixels);
HtmlContainer.RequestRefresh(layout);
}
}
/// <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);
}
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;
}
}
/// <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;
}
private bool IsLayoutRequired()
{
var width = new CssLength(Width);
var height = new CssLength(Height);
return (width.Number <= 0 || width.Unit != CssUnit.Pixels) || (height.Number <= 0 || height.Unit != CssUnit.Pixels);
}
