/// <summary>
/// Get the <paramref name="min"/> and <paramref name="maxSum"/> of the box words content and <paramref name="paddingSum"/>.<br/>
/// </summary>
/// <param name="box">the box to calculate for</param>
/// <param name="min">the width that allows for each word to fit (width of the longest word)</param>
/// <param name="maxSum">the max width a single line of words can take without wrapping</param>
/// <param name="paddingSum">the total amount of padding the content has </param>
/// <param name="marginSum"></param>
/// <returns></returns>
static void CalculateMinMaxSumWords(
CssBox box,
CssBox cbBox,
IFonts iFonts,
ref float min,
ref float maxSum,
ref float paddingSum,
ref float marginSum)
{
//recursive
float? oldSum = null;
// not inline (block) boxes start a new line so we need to reset the max sum
if (box.CssDisplay != CssDisplay.Inline &&
box.CssDisplay != CssDisplay.TableCell &&
box.WhiteSpace != CssWhiteSpace.NoWrap)
{
oldSum = maxSum;
maxSum = marginSum;
}
// add the padding
paddingSum += box.ActualBorderLeftWidth + box.ActualBorderRightWidth + box.ActualPaddingRight + box.ActualPaddingLeft;
// for tables the padding also contains the spacing between cells
if (box.CssDisplay == CssDisplay.Table)
{
paddingSum += CssTableLayoutEngine.CalculateTableSpacing(box);
}
if (box.HasOnlyRuns)
{
// calculate the min and max sum for all the words in the box
foreach (CssRun run in box.GetRunIter())
{
maxSum += run.Width;
min = Math.Max(min, run.Width);
}
}
else
{
// recursively on all the child boxes
//if this box has containing property
if (box.HasContainingBlockProperty)
{
foreach (CssBox childBox in box.GetChildBoxIter())
{
if (childBox.NeedComputedValueEvaluation) { childBox.ReEvaluateComputedValues(iFonts, box); }
float msum = childBox.ActualMarginLeft + childBox.ActualMarginRight;
marginSum += msum;
//recursive
CalculateMinMaxSumWords(childBox, box, iFonts, ref min, ref maxSum, ref paddingSum, ref marginSum);
marginSum -= msum;
}
}
else
{
foreach (CssBox childBox in box.GetChildBoxIter())
{
if (childBox.NeedComputedValueEvaluation) { childBox.ReEvaluateComputedValues(iFonts, cbBox); }
float msum = childBox.ActualMarginLeft + childBox.ActualMarginRight;
marginSum += msum;
//recursive
CalculateMinMaxSumWords(childBox, cbBox, iFonts, ref min, ref maxSum, ref paddingSum, ref marginSum);
marginSum -= msum;
}
}
}
// max sum is max of all the lines in the box
if (oldSum.HasValue)
{
maxSum = Math.Max(maxSum, oldSum.Value);
}
}
