|
public UpdateMarginTopCollapse ( |
||
| upperSibling | the previous box under the same parent | |
| return | float | |
public static void PerformContentLayout(CssBox box, LayoutVisitor lay)
{
//recursive
//this box has its own container property
//this box may use...
// 1) line formatting context , or
// 2) block formatting context
CssBox myContainingBlock = lay.LatestContainingBlock;
CssBox prevSibling = lay.LatestSiblingBox;
if (box.CssDisplay != Css.CssDisplay.TableCell)
{
//-------------------------------------------
if (box.CssDisplay != Css.CssDisplay.Table)
{
float availableWidth = myContainingBlock.GetClientWidth();
// Console.WriteLine(availableWidth.ToString());
if (!box.Width.IsEmptyOrAuto)
{
float w = CssValueParser.ConvertToPx(box.Width, availableWidth, box);
//specific width
box.SetCssBoxWidth(w);
}
else
{
box.SetCssBoxFromContainerAvailableWidth(availableWidth);
}
}
//-------------------------------------------
float localLeft = myContainingBlock.GetClientLeft() + box.ActualMarginLeft;
float localTop = 0;
if (prevSibling == null)
{
//this is first child of parent
if (box.ParentBox != null)
{
localTop = myContainingBlock.GetClientTop();
}
}
else
{
localTop = prevSibling.LocalVisualBottom;
}
//if (box.Float != CssFloat.None)
//{
// //float box
// //find context floating c
// if (lay.HasFloatBoxInContext)
// {
// }
//}
localTop += box.UpdateMarginTopCollapse(prevSibling);
box.SetLocation(localLeft, localTop);
box.SetHeightToZero();
}
//--------------------------------------------------------------------------
switch (box.CssDisplay)
{
case Css.CssDisplay.Table:
case Css.CssDisplay.InlineTable:
{
//If we're talking about a table here..
lay.PushContaingBlock(box);
var currentLevelLatestSibling = lay.LatestSiblingBox;
lay.LatestSiblingBox = null;//reset
CssTableLayoutEngine.PerformLayout(box, myContainingBlock.GetClientWidth(), lay);
lay.LatestSiblingBox = currentLevelLatestSibling;
lay.PopContainingBlock();
//TODO: check if this can have absolute layer?
}
break;
default:
{
//formatting context for...
//1. line formatting context
//2. block formatting context
if (box.IsCustomCssBox)
{
//has custom layout method
box.ReEvaluateComputedValues(lay.SampleIFonts, lay.LatestContainingBlock);
box.CustomRecomputedValue(lay.LatestContainingBlock);
}
else
{
if (ContainsInlinesOnly(box))
{
//This will automatically set the bottom of this block
LinesFormattingEngine.DoLayoutLinesContext(box, lay);
}
else if (box.ChildCount > 0)
{
DoLayoutBlocksContext(box, lay);
}
if (box.HasAbsoluteLayer)
{
LayoutContentInAbsoluteLayer(lay, box);
}
}
//---------------------
//again!
switch (box.CssDisplay)
{
case CssDisplay.Flex:
case CssDisplay.InlineFlex:
{
//------------------------------------------------
RearrangeWithFlexContext(box, lay);
//------------------------------------------------
}
break;
default:
{ //TODO: review here again
//if (box.Float != CssFloat.None)
//{
// var iw = box.InnerContentWidth;
// var ew = box.VisualWidth;
// box.SetVisualSize(box.InnerContentWidth, box.InnerContentHeight);
// //float to specific position
// //box.SetVisualSize(iw, box.VisualHeight);
//}
}
break;
}
//---------------------
}
break;
}
switch (box.Float)
{
case CssFloat.Left:
{
#if DEBUG
CssBox a = box;
#endif
//place it to floating context
CssBox currentFloatOwner = lay.GetFloatingContextStack().CurrentTopOwner;
CssBox recentLeftFloatBox = lay.LatestLeftFloatBox;
CssBox recentRightFloatBox = lay.LatestRightFloatBox;
float availableWidth2 = myContainingBlock.GetClientWidth();
if (recentRightFloatBox != null)
{
availableWidth2 -= recentRightFloatBox.LocalX;
}
float sx = myContainingBlock.GetClientLeft();
//--------------------------------------------------------------------
float sy = 0;
if (myContainingBlock.LineBoxCount > 0)
{
//line context
sy = myContainingBlock.GetClientTop();
}
else
{
var prevNode = box.GetPrevNode();
if (prevNode != null)
{
if (prevNode.Float != CssFloat.None)
{
//float left/right
//TODO: review inherit here
if (box.VisualWidth < availableWidth2)
{
sy = prevNode.LocalY;
}
else
{
sy = prevNode.LocalVisualBottom;
}
}
else
{
sy = prevNode.LocalVisualBottom;
}
}
else
{
sy = myContainingBlock.GetClientTop();
}
}
if (recentLeftFloatBox != null)
{
availableWidth2 -= recentLeftFloatBox.LocalVisualRight;
//TODO: review here again
sx = recentLeftFloatBox.LocalVisualRight + recentLeftFloatBox.ActualMarginRight;
sy = recentLeftFloatBox.LocalY;
}
if (box.VisualWidth > availableWidth2)
{
//start newline
sx = myContainingBlock.GetClientLeft();
float sy1 = 0;
float sy2 = 0;
sy1 = sy2 = myContainingBlock.GetClientTop();
if (recentLeftFloatBox != null)
{
sy1 = recentLeftFloatBox.LocalVisualBottom + recentLeftFloatBox.ActualMarginBottom;
}
if (recentRightFloatBox != null)
{
sy2 = recentRightFloatBox.LocalVisualBottom + recentRightFloatBox.ActualMarginBottom;
}
sy = (sy1 > sy2) ? sy1 : sy2;
}
sx += box.ActualMarginLeft;
sy += box.ActualMarginTop;
box.SetLocation(sx, sy);
lay.AddFloatBox(box);
}
break;
case CssFloat.Right:
{
CssBox recentLeftFloatBox = lay.LatestLeftFloatBox;
CssBox recentRightFloatBox = lay.LatestRightFloatBox;
float availableWidth2 = myContainingBlock.GetClientWidth();
if (recentLeftFloatBox != null)
{
availableWidth2 -= recentLeftFloatBox.LocalVisualRight;
}
float sx = myContainingBlock.GetClientRight() - (box.VisualWidth + box.ActualMarginLeft + box.ActualMarginRight);
//--------------------------------------------------------------------
float sy = 0;
if (myContainingBlock.LineBoxCount > 0)
{
//line context
sy = myContainingBlock.GetClientTop();
}
else
{
var prevNode = box.GetPrevNode();
if (prevNode != null)
{
if (prevNode.Float != CssFloat.None)
{
//float left/right
//TODO: review inherit here
if (box.VisualWidth < availableWidth2)
{
sy = prevNode.LocalY;
}
else
{
sy = prevNode.LocalVisualBottom;
}
}
else
{
sy = prevNode.LocalVisualBottom;
}
}
else
{
sy = myContainingBlock.GetClientTop();
}
}
//--------------------------------------------------------------------
if (recentRightFloatBox != null)
{
availableWidth2 -= recentRightFloatBox.LocalX;
sx = recentRightFloatBox.LocalX - box.VisualWidth;
sy = recentRightFloatBox.LocalY;
}
if (box.VisualWidth > availableWidth2)
{
//start newline
sx = myContainingBlock.GetClientRight() - (box.VisualWidth + box.ActualMarginLeft + box.ActualMarginRight);
float sy1 = 0;
float sy2 = 0;
sy1 = sy2 = myContainingBlock.GetClientTop();
//if (recentLeftFloatBox != null)
//{
// sy1 = recentLeftFloatBox.LocalY + recentLeftFloatBox.InnerContentHeight +
// recentLeftFloatBox.ActualPaddingBottom +
// recentLeftFloatBox.ActualMarginBottom;
//}
//if (recentRightFloatBox != null)
//{
// sy2 = recentRightFloatBox.LocalY + recentRightFloatBox.InnerContentHeight +
// recentRightFloatBox.ActualPaddingBottom +
// recentRightFloatBox.ActualMarginBottom;
//}
if (recentLeftFloatBox != null)
{
sy1 = recentLeftFloatBox.LocalVisualBottom + recentLeftFloatBox.ActualMarginBottom;
}
if (recentRightFloatBox != null)
{
sy2 = recentRightFloatBox.LocalVisualBottom + recentRightFloatBox.ActualMarginBottom;
}
sy = (sy1 > sy2) ? sy1 : sy2;
}
sx += box.ActualMarginLeft;
sy += box.ActualMarginTop;
box.SetLocation(sx, sy);
lay.AddFloatBox(box);
}
break;
case CssFloat.None:
default:
{
//review here for inherit property
}
break;
}
}