internal unsafe void GetSectionColumnInfo(uint fswdir, int ncol, PTS.FSCOLUMNINFO *pfscolinfo, out int ccol)
{
ColumnPropertiesGroup columnProperties = new ColumnPropertiesGroup(this.Element);
Size pageSize = this._structuralCache.CurrentFormatContext.PageSize;
double lineHeightValue = DynamicPropertyReader.GetLineHeightValue(this.Element);
Thickness pageMargin = this._structuralCache.CurrentFormatContext.PageMargin;
double pageFontSize = (double)this._structuralCache.PropertyOwner.GetValue(TextElement.FontSizeProperty);
FontFamily pageFontFamily = (FontFamily)this._structuralCache.PropertyOwner.GetValue(TextElement.FontFamilyProperty);
bool finitePage = this._structuralCache.CurrentFormatContext.FinitePage;
ccol = ncol;
PtsHelper.GetColumnsInfo(columnProperties, lineHeightValue, pageSize.Width - (pageMargin.Left + pageMargin.Right), pageFontSize, pageFontFamily, ncol, pfscolinfo, finitePage);
}
internal static unsafe void GetColumnsInfo(
ColumnPropertiesGroup columnProperties,
double lineHeight,
double pageWidth,
double pageFontSize,
FontFamily pageFontFamily,
int cColumns,
PTS.FSCOLUMNINFO *pfscolinfo,
bool enableColumns)
{
Debug.Assert(cColumns > 0, "At least one column is required.");
double columnWidth;
double freeSpace;
double gap;
double rule = columnProperties.ColumnRuleWidth;
GetColumnMetrics(columnProperties, pageWidth,
pageFontSize, pageFontFamily, enableColumns, cColumns,
ref lineHeight, out columnWidth, out freeSpace, out gap);
// Set columns information
if (!columnProperties.IsColumnWidthFlexible)
{
// All columns have the declared width
// ColumnGap is flexible and is increased based on ColumnSpaceDistribution policy
// (ColumnGap is effectively min)
for (int i = 0; i < cColumns; i++)
{
// Today there is no way to change the default value of ColumnSpaceDistribution.
// If column widths are not flexible, always allocate unused space on the right side.
pfscolinfo[i].durBefore = TextDpi.ToTextDpi((i == 0) ? 0 : gap);
pfscolinfo[i].durWidth = TextDpi.ToTextDpi(columnWidth);
// ColumnWidth has to be > 0 and SpaceBefore has to be >= 0
pfscolinfo[i].durBefore = Math.Max(0, pfscolinfo[i].durBefore);
pfscolinfo[i].durWidth = Math.Max(1, pfscolinfo[i].durWidth);
}
}
else
{
// ColumnGap is honored
// ColumnWidth is effectively min, and space is distributed according to ColumnSpaceDistribution policy
for (int i = 0; i < cColumns; i++)
{
if (columnProperties.ColumnSpaceDistribution == ColumnSpaceDistribution.Right)
{
pfscolinfo[i].durWidth = TextDpi.ToTextDpi((i == cColumns - 1) ? columnWidth + freeSpace : columnWidth);
}
else if (columnProperties.ColumnSpaceDistribution == ColumnSpaceDistribution.Left)
{
pfscolinfo[i].durWidth = TextDpi.ToTextDpi((i == 0) ? columnWidth + freeSpace : columnWidth);
}
else
{
pfscolinfo[i].durWidth = TextDpi.ToTextDpi(columnWidth + (freeSpace / cColumns));
}
// If calculated column width is greater than the page width, set it to page width to
// avoid clipping
if (pfscolinfo[i].durWidth > TextDpi.ToTextDpi(pageWidth))
{
pfscolinfo[i].durWidth = TextDpi.ToTextDpi(pageWidth);
}
pfscolinfo[i].durBefore = TextDpi.ToTextDpi((i == 0) ? 0 : gap);
// ColumnWidth has to be > 0 and SpaceBefore has to be >= 0
pfscolinfo[i].durBefore = Math.Max(0, pfscolinfo[i].durBefore);
pfscolinfo[i].durWidth = Math.Max(1, pfscolinfo[i].durWidth);
}
}
}
internal unsafe static void GetColumnsInfo(ColumnPropertiesGroup columnProperties, double lineHeight, double pageWidth, double pageFontSize, FontFamily pageFontFamily, int cColumns, PTS.FSCOLUMNINFO *pfscolinfo, bool enableColumns)
{
double columnRuleWidth = columnProperties.ColumnRuleWidth;
double num;
double num2;
double num3;
PtsHelper.GetColumnMetrics(columnProperties, pageWidth, pageFontSize, pageFontFamily, enableColumns, cColumns, ref lineHeight, out num, out num2, out num3);
if (!columnProperties.IsColumnWidthFlexible)
{
for (int i = 0; i < cColumns; i++)
{
pfscolinfo[i].durBefore = TextDpi.ToTextDpi((i == 0) ? 0.0 : num3);
pfscolinfo[i].durWidth = TextDpi.ToTextDpi(num);
pfscolinfo[i].durBefore = Math.Max(0, pfscolinfo[i].durBefore);
pfscolinfo[i].durWidth = Math.Max(1, pfscolinfo[i].durWidth);
}
return;
}
for (int j = 0; j < cColumns; j++)
{
if (columnProperties.ColumnSpaceDistribution == ColumnSpaceDistribution.Right)
{
pfscolinfo[j].durWidth = TextDpi.ToTextDpi((j == cColumns - 1) ? (num + num2) : num);
}
else if (columnProperties.ColumnSpaceDistribution == ColumnSpaceDistribution.Left)
{
pfscolinfo[j].durWidth = TextDpi.ToTextDpi((j == 0) ? (num + num2) : num);
}
else
{
pfscolinfo[j].durWidth = TextDpi.ToTextDpi(num + num2 / (double)cColumns);
}
if (pfscolinfo[j].durWidth > TextDpi.ToTextDpi(pageWidth))
{
pfscolinfo[j].durWidth = TextDpi.ToTextDpi(pageWidth);
}
pfscolinfo[j].durBefore = TextDpi.ToTextDpi((j == 0) ? 0.0 : num3);
pfscolinfo[j].durBefore = Math.Max(0, pfscolinfo[j].durBefore);
pfscolinfo[j].durWidth = Math.Max(1, pfscolinfo[j].durWidth);
}
}
