internal static FontData Create(FontDescriptor fontDescriptor, FontDataSettings settings)
{
var fontData = new FontData(fontDescriptor, settings)
{
Pages = GeneratePages(fontDescriptor, settings),
};
return(fontData);
}
private static FontPage[] GeneratePages(FontDescriptor fontDescriptor, FontDataSettings settings)
{
var characters = new HashSet <uint>(settings.Characters ?? new uint[] { });
var query = from item in fontDescriptor.Glyphs
where settings.Characters == null || characters.Contains(item.Key)
let glyph = item.Value
where glyph.Bitmap != null
let metrics = glyph.Metrics
orderby metrics.Width descending
orderby metrics.Height descending
select glyph;
var items = query.ToArray();
var index = 0;
var pageList = new List <FontPage>();
var page = new FontPage(index++, settings);
pageList.Add(page);
foreach (var item in items)
{
var reservator = page.ReserveRegion(item);
if (reservator == null)
{
page = new FontPage(index++, settings);
pageList.Add(page);
reservator = page.ReserveRegion(item);
}
try
{
reservator.Reserve();
}
catch
{
reservator.Reject();
}
}
return(pageList.ToArray());
}
private FontData(FontDescriptor fontDescriptor, FontDataSettings settings)
{
this.fontDescriptor = fontDescriptor ?? throw new ArgumentNullException(nameof(fontDescriptor));
this.settings = settings ?? throw new ArgumentNullException(nameof(settings));
}