private PageRowBound[] CalculatePageRowBounds(Size[] singlePageBounds, ViewType viewType)
{
var pagesPerRow = Math.Min(GetPagesPerRow(), singlePageBounds.Length); // if multiple page-view, but pdf contains less pages than the pages per row
var finalBounds = new List<PageRowBound>();
var verticalBorderOffset = (this.PageMargin.Top + this.PageMargin.Bottom);
if (viewType == MoonPdfLib.ViewType.SinglePage)
{
finalBounds.AddRange(singlePageBounds.Select(p => new PageRowBound( p, verticalBorderOffset, 0)));
}
else
{
var horizontalBorderOffset = this.HorizontalMargin;
for (int i = 0; i < singlePageBounds.Length; i++)
{
if (i == 0 && viewType == MoonPdfLib.ViewType.BookView)
{
finalBounds.Add(new PageRowBound(singlePageBounds[0], verticalBorderOffset, 0));
continue;
}
var subset = singlePageBounds.Take(i, pagesPerRow).ToArray();
// we get the max page-height from all pages in the subset and the sum of all page widths of the subset plus the offset between the pages
finalBounds.Add(new PageRowBound(new Size(subset.Sum(f => f.Width), subset.Max(f => f.Height)), verticalBorderOffset, horizontalBorderOffset * (subset.Length - 1)));
i += (pagesPerRow - 1);
}
}
return finalBounds.ToArray();
}