//=============================================================
/// <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(CssValueParser.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(CssValueParser.ConvertToPx(padding, cbWidth, this));
}
internal float MeasureWhiteSpace(CssBox box)
{
//depends on Font of this box
float w = this.SampleIFonts.MeasureWhitespace(box.ActualFont);
if (!(box.WordSpacing.IsEmpty || box.WordSpacing.IsNormalWordSpacing))
{
w += CssValueParser.ConvertToPxWithFontAdjust(box.WordSpacing, 0, box);
}
return(w);
}
public void ReEvaluateFont(ITextService iFonts, float parentFontSize)
{
RequestFont fontInfo = this._myspec.GetFont(parentFontSize);
this._resolvedFont = fontInfo;
if (_myspec.WordSpacing.IsNormalWordSpacing)
{
this._actualWordSpacing = iFonts.MeasureWhitespace(_resolvedFont);
}
else
{
this._actualWordSpacing = iFonts.MeasureWhitespace(_resolvedFont)
+ CssValueParser.ConvertToPx(_myspec.WordSpacing, 1, this);
}
}
public void ReEvaluateFont(IFonts iFonts, float parentFontSize)
{
FontInfo fontInfo = this._myspec.GetFontInfo(iFonts, parentFontSize);
this._actualFont = fontInfo.ResolvedFont;
this._actualLineHeight = fontInfo.LineHeight;
this._actualEmHeight = fontInfo.LineHeight;
if (_myspec.WordSpacing.IsNormalWordSpacing)
{
this._actualWordSpacing = iFonts.MeasureWhitespace(_actualFont);
}
else
{
this._actualWordSpacing = iFonts.MeasureWhitespace(_actualFont)
+ CssValueParser.ConvertToPx(_myspec.WordSpacing, 1, this);
}
}
/// <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 PerformContentLayout(LayoutVisitor lay)
{
if (this.CssDisplay == Css.CssDisplay.None)
{
return;
}
var prevSibling = lay.LatestSiblingBox;
var myContainingBlock = lay.LatestContainingBlock;
if (this.NeedComputedValueEvaluation)
{
this.ReEvaluateComputedValues(lay.SampleIFonts, myContainingBlock);
}
float localLeft = myContainingBlock.GetClientLeft() + this.ActualMarginLeft;
float localTop = 0;
if (prevSibling == null)
{
if (this.ParentBox != null)
{
localTop = myContainingBlock.GetClientTop();
}
}
else
{
localTop = prevSibling.LocalVisualBottom;// +prevSibling.ActualBorderBottomWidth;
}
float maringTopCollapse = UpdateMarginTopCollapse(prevSibling);
if (maringTopCollapse < 0.1)
{
maringTopCollapse = this.GetEmHeight() * 1.1f;
}
localTop += maringTopCollapse;
this.SetLocation(localLeft, localTop);
this.SetHeightToZero();
//width at 100% (or auto)
float minwidth = CalculateMinimumWidth(lay.EpisodeId);
float width = myContainingBlock.VisualWidth
- myContainingBlock.ActualPaddingLeft - myContainingBlock.ActualPaddingRight
- myContainingBlock.ActualBorderLeftWidth - myContainingBlock.ActualBorderRightWidth
- ActualMarginLeft - ActualMarginRight - ActualBorderLeftWidth - ActualBorderRightWidth;
//Check width if not auto
if (!this.Width.IsEmptyOrAuto)
{
width = CssValueParser.ConvertToPx(Width, width, this);
}
if (width < minwidth || width >= CssBoxConstConfig.TABLE_MAX_WIDTH)
{
width = minwidth;
}
float height = ExpectedHeight;
if (height < 1)
{
height = this.VisualHeight + ActualBorderTopWidth + ActualBorderBottomWidth;
}
if (height < 1)
{
height = 2;
}
if (height <= 2 && ActualBorderTopWidth < 1 && ActualBorderBottomWidth < 1)
{
DirectSetBorderWidth(CssSide.Top, 1);
DirectSetBorderWidth(CssSide.Bottom, 1);
}
this.SetVisualSize(width, height);
this.SetVisualHeight(ActualPaddingTop + ActualPaddingBottom + height);
}
/// <summary>
/// evaluate computed value
/// </summary>
internal void ReEvaluateComputedValues(ITextService iFonts, CssBox containingBlock)
{
//depend on parent
//1. fonts
if (this.ParentBox != null)
{
ReEvaluateFont(iFonts, this.ParentBox.ResolvedFont.SizeInPixels);
//2. actual word spacing
//this._actualWordSpacing = this.NoEms(this.InitSpec.LineHeight);
//3. font size
//len = len.ConvertEmToPoints(parentBox.ActualFont.SizeInPoints);
}
else
{
ReEvaluateFont(iFonts, containingBlock.ResolvedFont.SizeInPixels);
//this._actualFont = this.Spec.GetFont(containingBlock.Spec);
}
//-----------------------------------------------------------------------
float cbWidth = containingBlock.VisualWidth;
int tmpBoxCompactFlags = this._boxCompactFlags;
this._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
var 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 (this.__aa_dbugId == 5)
//{
// int a = spec.__aa_dbugId;
//}
this._actualMarginLeft = RecalculateMargin(spec.MarginLeft, cbWidth);
this._actualMarginTop = RecalculateMargin(spec.MarginTop, cbWidth);
this._actualMarginRight = RecalculateMargin(spec.MarginRight, cbWidth);
this._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
this._actualPaddingLeft = RecalculatePadding(spec.PaddingLeft, cbWidth);
this._actualPaddingTop = RecalculatePadding(spec.PaddingTop, cbWidth);
this._actualPaddingRight = RecalculatePadding(spec.PaddingRight, cbWidth);
this._actualPaddingBottom = RecalculatePadding(spec.PaddingBottom, cbWidth);
}
break;
}
//-----------------------------------------------------------------------
//borders
float a1, a2, a3, a4;
this._actualBorderLeftWidth = a1 = (spec.BorderLeftStyle == CssBorderStyle.None) ? 0 : CssValueParser.GetActualBorderWidth(spec.BorderLeftWidth, this);
this._actualBorderTopWidth = a2 = (spec.BorderTopStyle == CssBorderStyle.None) ? 0 : CssValueParser.GetActualBorderWidth(spec.BorderTopWidth, this);
this._actualBorderRightWidth = a3 = (spec.BorderRightStyle == CssBorderStyle.None) ? 0 : CssValueParser.GetActualBorderWidth(spec.BorderRightWidth, this);
this._actualBorderBottomWidth = a4 = (spec.BorderBottomStyle == CssBorderStyle.None) ? 0 : CssValueParser.GetActualBorderWidth(spec.BorderBottomWidth, this);
//---------------------------------------------------------------------------
this._borderLeftVisible = a1 > 0 && spec.BorderLeftStyle >= CssBorderStyle.Visible;
this._borderTopVisible = a2 > 0 && spec.BorderTopStyle >= CssBorderStyle.Visible;
this._borderRightVisible = a3 > 0 && spec.BorderRightStyle >= CssBorderStyle.Visible;
this._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;
}
//---------------------------------------------------------------------------
this._actualCornerNE = a1 = CssValueParser.ConvertToPx(spec.CornerNERadius, 0, this);
this._actualCornerNW = a2 = CssValueParser.ConvertToPx(spec.CornerNWRadius, 0, this);
this._actualCornerSE = a3 = CssValueParser.ConvertToPx(spec.CornerSERadius, 0, this);
this._actualCornerSW = a4 = CssValueParser.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 ||
RenderUtils.IsColorVisible(ActualBackgroundColor))
{
tmpBoxCompactFlags |= BoxFlags.HAS_VISIBLE_BG;
}
else
{
tmpBoxCompactFlags &= ~BoxFlags.HAS_VISIBLE_BG;
}
if (spec.WordSpacing.IsNormalWordSpacing)
{
this._actualWordSpacing = iFonts.MeasureWhitespace(_resolvedFont);
}
else
{
this._actualWordSpacing = iFonts.MeasureWhitespace(_resolvedFont)
+ CssValueParser.ConvertToPx(spec.WordSpacing, 1, this);
}
//----------------------------------------------
this._boxCompactFlags = tmpBoxCompactFlags;
//----------------------------------------------
//text indent
this._actualTextIndent = CssValueParser.ConvertToPx(spec.TextIndent, containingBlock.VisualWidth, this);
this._actualBorderSpacingHorizontal = spec.BorderSpacingHorizontal.Number;
this._actualBorderSpacingVertical = spec.BorderSpacingVertical.Number;
//-----------------------
//this._actualLineHeight = 0.9f * CssValueParser.ConvertToPx(LineHeight, this.GetEmHeight(), this);
//expected width expected height
//this._expectedWidth = CssValueParser.ParseLength(Width, cbWidth, this);
//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 (this._myspec.HasBoxShadow)
{
//temp fix here
//TODO: review move shadow to external decoration object/box
if (decorator == null)
{
decorator = new CssBoxDecorator();
}
decorator.HBoxShadowOffset = (int)CssValueParser.ConvertToPx(spec.BoxShadowHOffset, 0, this);
decorator.VBoxShadowOffset = (int)CssValueParser.ConvertToPx(spec.BoxShadowVOffset, 0, this);
decorator.Color = spec.BoxShadowColor;
}
else
{
this.decorator = null;
}
}
