//=============================================================
/// <summary>
/// recalculate margin
/// </summary>
/// <param name="margin">marin side</param>
/// <param name="cbWidth">width of containging block</param>
/// <returns></returns>
float RecalculateMargin(CssLength margin, float cbWidth)
{
//www.w3.org/TR/CSS2/box.html#margin-properties
if (margin.IsAuto)
{
return(0);
}
return(CssLengthExt.ConvertToPx(margin, cbWidth, this));
}
/// <summary>
/// recalculate padding
/// </summary>
/// <param name="padding"></param>
/// <param name="cbWidth"></param>
/// <returns></returns>
float RecalculatePadding(CssLength padding, float cbWidth)
{
//www.w3.org/TR/CSS2/box.html#padding-properties
if (padding.IsAuto)
{
return(0);
}
return(CssLengthExt.ConvertToPx(padding, cbWidth, this));
}
public void ReEvaluateFont(IHtmlTextService txtsx, float parentFontSize)
{
_resolvedFont1 = txtsx.ResolveFont(_reqFont = _myspec.GetFont(parentFontSize));
if (_myspec.WordSpacing.IsNormalWordSpacing)
{
//use normal spacing
_actualWordSpacing = _resolvedFont1.WhitespaceWidth;//use pre-rounding (int) or exact scaled value ???
}
else
{
//TODO: review here,***
//additional to original whitespacing or REPLACE with the new value
_actualWordSpacing = _resolvedFont1.WhitespaceWidth +//use pre-rounding (int) or exact scaled value ???
CssLengthExt.ConvertToPx(_myspec.WordSpacing, 1, this);
}
}
/// <summary>
/// evaluate computed value
/// </summary>
internal void ReEvaluateComputedValues(IHtmlTextService iFonts, CssBox containingBlock)
{
//depend on parent
//1. fonts
if (this.ParentBox != null)
{
if (this.ParentBox.ResolvedFont == null)
{
//TODO: review this ... WHY?
//SIZE in point unit or pixel???
ReEvaluateFont(iFonts, containingBlock._resolvedFont1.SizeInPoints);
}
else
{
ReEvaluateFont(iFonts, this.ParentBox._resolvedFont1.SizeInPoints);
}
//2. actual word spacing
//_actualWordSpacing = this.NoEms(this.InitSpec.LineHeight);
//3. font size
//len = len.ConvertEmToPoints(parentBox.ActualFont.SizeInPoints);
}
else
{
ReEvaluateFont(iFonts, containingBlock._resolvedFont1.SizeInPoints);
//_actualFont = this.Spec.GetFont(containingBlock.Spec);
}
//-----------------------------------------------------------------------
float cbWidth = containingBlock.VisualWidth;
int tmpBoxCompactFlags = _boxCompactFlags;
_boxCompactFlags |= BoxFlags.LAY_EVAL_COMPUTE_VALUES;
//www.w3.org/TR/CSS2/box.html#margin-properties
//w3c: margin applies to all elements except elements table display type
//other than table-caption,table and inline table
CssDisplay cssDisplay = this.CssDisplay;
BoxSpec spec = _myspec;
switch (cssDisplay)
{
case CssDisplay.None:
{
return;
}
case CssDisplay.TableCell:
case CssDisplay.TableColumn:
case CssDisplay.TableColumnGroup:
case CssDisplay.TableFooterGroup:
case CssDisplay.TableHeaderGroup:
case CssDisplay.TableRow:
case CssDisplay.TableRowGroup:
{
//no margin
}
break;
default:
{
//if (__aa_dbugId == 5)
//{
// int a = spec.__aa_dbugId;
//}
_actualMarginLeft = RecalculateMargin(spec.MarginLeft, cbWidth);
_actualMarginTop = RecalculateMargin(spec.MarginTop, cbWidth);
_actualMarginRight = RecalculateMargin(spec.MarginRight, cbWidth);
_actualMarginBottom = RecalculateMargin(spec.MarginBottom, cbWidth);
}
break;
}
//www.w3.org/TR/CSS2/box.html#padding-properties
switch (cssDisplay)
{
case CssDisplay.TableRowGroup:
case CssDisplay.TableHeaderGroup:
case CssDisplay.TableFooterGroup:
case CssDisplay.TableRow:
case CssDisplay.TableColumnGroup:
case CssDisplay.TableColumn:
{
//no padding
}
break;
default:
{
//-----------------------------------------------------------------------
//padding
_actualPaddingLeft = RecalculatePadding(spec.PaddingLeft, cbWidth);
_actualPaddingTop = RecalculatePadding(spec.PaddingTop, cbWidth);
_actualPaddingRight = RecalculatePadding(spec.PaddingRight, cbWidth);
_actualPaddingBottom = RecalculatePadding(spec.PaddingBottom, cbWidth);
}
break;
}
//-----------------------------------------------------------------------
//borders
float a1, a2, a3, a4;
_actualBorderLeftWidth = a1 = (spec.BorderLeftStyle == CssBorderStyle.None) ? 0 : CssLengthExt.GetActualBorderWidth(spec.BorderLeftWidth, this);
_actualBorderTopWidth = a2 = (spec.BorderTopStyle == CssBorderStyle.None) ? 0 : CssLengthExt.GetActualBorderWidth(spec.BorderTopWidth, this);
_actualBorderRightWidth = a3 = (spec.BorderRightStyle == CssBorderStyle.None) ? 0 : CssLengthExt.GetActualBorderWidth(spec.BorderRightWidth, this);
_actualBorderBottomWidth = a4 = (spec.BorderBottomStyle == CssBorderStyle.None) ? 0 : CssLengthExt.GetActualBorderWidth(spec.BorderBottomWidth, this);
//---------------------------------------------------------------------------
_borderLeftVisible = a1 > 0 && spec.BorderLeftStyle >= CssBorderStyle.Visible;
_borderTopVisible = a2 > 0 && spec.BorderTopStyle >= CssBorderStyle.Visible;
_borderRightVisible = a3 > 0 && spec.BorderRightStyle >= CssBorderStyle.Visible;
_borderBottomVisble = a4 > 0 && spec.BorderBottomStyle >= CssBorderStyle.Visible;
//extension ***
if (a1 + a2 + a3 + a4 > 0)
{
//css 2.1 border can't be nagative values
tmpBoxCompactFlags |= BoxFlags.HAS_SOME_VISIBLE_BORDER;
}
else
{
tmpBoxCompactFlags &= ~BoxFlags.HAS_SOME_VISIBLE_BORDER;
}
//---------------------------------------------------------------------------
_actualCornerNE = a1 = CssLengthExt.ConvertToPx(spec.CornerNERadius, 0, this);
_actualCornerNW = a2 = CssLengthExt.ConvertToPx(spec.CornerNWRadius, 0, this);
_actualCornerSE = a3 = CssLengthExt.ConvertToPx(spec.CornerSERadius, 0, this);
_actualCornerSW = a4 = CssLengthExt.ConvertToPx(spec.CornerSWRadius, 0, this);
if ((a1 + a2 + a3 + a4) > 0)
{
//evaluate
tmpBoxCompactFlags |= BoxFlags.HAS_ROUND_CORNER;
}
else
{
tmpBoxCompactFlags &= ~BoxFlags.HAS_ROUND_CORNER;
}
//---------------------------------------------------------------------------
//evaluate bg
if (BackgroundGradient != Color.Transparent ||
(ActualBackgroundColor.A > 0))
{
tmpBoxCompactFlags |= BoxFlags.HAS_VISIBLE_BG;
}
else
{
tmpBoxCompactFlags &= ~BoxFlags.HAS_VISIBLE_BG;
}
if (spec.WordSpacing.IsNormalWordSpacing)
{
_actualWordSpacing = iFonts.MeasureWhitespace(_reqFont);
}
else
{
_actualWordSpacing = iFonts.MeasureWhitespace(_reqFont)
+ CssLengthExt.ConvertToPx(spec.WordSpacing, 1, this);
}
//----------------------------------------------
_boxCompactFlags = tmpBoxCompactFlags;
//----------------------------------------------
//text indent
_actualTextIndent = CssLengthExt.ConvertToPx(spec.TextIndent, containingBlock.VisualWidth, this);
_actualBorderSpacingHorizontal = spec.BorderSpacingHorizontal.Number;
_actualBorderSpacingVertical = spec.BorderSpacingVertical.Number;
//-----------------------
//_actualLineHeight = 0.9f * CssValueParser.ConvertToPx(LineHeight, this.GetEmHeight(), this);
//expected width expected height
//_expectedWidth = CssValueParser.ParseLength(Width, cbWidth, this);
//_expectedHight = CssValueParser.ParseLength(Height, containingBlock.SizeHeight, this);
////----------------------------------------------
//www.w3.org/TR/CSS2/visudet.html#line-height
//line height,
//percent value of line height :
// is refer to font size of the element itself
//if (this.LineHeight.Number > 0)
//{
// _actualLineHeight = .9f * CssValueParser.ConvertToPx(LineHeight, this.GetEmHeight(), this);
//}
//else
//{
// _actualLineHeight = .9f * (this.GetEmHeight());
//}
if (_myspec.HasBoxShadow)
{
//temp fix here
//TODO: review move shadow to external decoration object/box
if (_decorator == null)
{
_decorator = new CssBoxDecorator();
}
_decorator.HBoxShadowOffset = (int)CssLengthExt.ConvertToPx(spec.BoxShadowHOffset, 0, this);
_decorator.VBoxShadowOffset = (int)CssLengthExt.ConvertToPx(spec.BoxShadowVOffset, 0, this);
_decorator.Color = spec.BoxShadowColor;
}
else
{
_decorator = null;
}
}