private static void Worker_Open(object sender, DoWorkEventArgs e)
{
var Worker = (BackgroundWorker)sender;
var Input = (Stream)e.Argument;
StructReader Reader = new StructReader(Input);
if (Reader.PeekInt() != 0x414E46)
{
throw new Exception("The Input file isn't a FNA File");
}
FNAHeader FontInfo = new FNAHeader();
Reader.ReadStruct(ref FontInfo);
if (FontInfo.Version != 0)
{
throw new Exception("Unsupported FNA Version");
}
int LastReportedProgress = -1;
int Current = 0;
int Steps = (from a in FontInfo.Fonts select(from b in a.Tables select b.Gylphs.Length).Sum()).Sum();
for (int a = 0; a < FontInfo.Fonts.Length; a++)
{
ref var Font = ref FontInfo.Fonts[a];
for (int b = 0; b < Font.Tables.Length; b++)
{
ref var Table = ref Font.Tables[b];
for (uint i = 0; i < Table.Gylphs.Length; i++)
{
if (Worker.CancellationPending)
{
e.Cancel = true;
return;
}
int Progress = (int)Math.Abs(((double)(100 * ++Current)) / Steps);
if (Progress != LastReportedProgress)
{
LastReportedProgress = Progress;
Worker.ReportProgress(Progress);
}
ref var Glyph = ref Table.Gylphs[i];
if (Glyph.TextureOffset != 0)
{
Glyph.Data = new VirtStream(Input, Glyph.TextureOffset, Glyph.TextureSize);
}
else
{
Glyph.Data = null;
}
Glyph.Char = IndexToChar(i);
Glyph.CreateTexture(Table.Height);
}
public static async Task Save(this FNAHeader Font, Stream Output, Action <int> OnProgressChanged)
{
BackgroundWorker Worker = new BackgroundWorker();
Worker.WorkerReportsProgress = true;
Worker.WorkerSupportsCancellation = true;
Worker.DoWork += Worker_Save;
bool Running = true;
Worker.ProgressChanged += (a, b) => OnProgressChanged?.Invoke(b.ProgressPercentage);
Worker.RunWorkerCompleted += (a, b) => Running = false;
Worker.RunWorkerAsync(new object[] { Font, Output });
while (Running)
{
await Task.Delay(100);
}
}