public override void Save(Stream stream, CharacterDocument document)
{
var bw = new BinaryWriter(stream);
var page = document.Pages[0];
var canvas = page.Canvas;
int lasty = canvas.FindEndY(CanvasElement.Default);
var xbh = new XBinHeader
{
Width = (ushort)canvas.Size.Width,
Height = (ushort)(lasty + 1),
Compress = EnableCompression,
NonBlink = document.ICEColours
};
if (page.Palette.Count == 16 && page.Palette != Palette.GetDosPalette())
{
xbh.Palette = true;
}
xbh.Font = true;
if (xbh.Font)
{
xbh.FontSize = (byte)page.Font.Size.Height;
xbh.Font512 |= page.Font.NumChars > 256;
}
xbh.Write(bw);
if (xbh.Palette)
{
page.Palette.Save(bw, 2);
}
if (xbh.Font)
{
page.Font.Save(bw);
}
if (xbh.Compress)
{
for (int y = 0; y <= lasty; y++)
{
WriteCompressedRow(canvas, y, bw);
}
}
else
{
for (int y = 0; y <= lasty; y++)
{
for (int x = 0; x < canvas.Width; x++)
{
var ce = canvas[x, y];
bw.Write((byte)ce.Character);
bw.Write((byte)ce.Attribute);
}
}
}
bw.Flush();
}
public override void Load(Stream fs, CharacterDocument document, CharacterHandler handler)
{
var page = document.Pages[0];
var br = new BinaryReader(fs);
try
{
var header = new XBinHeader(br);
if (header.XBinID != XBinHeader.XBIN_ID)
{
throw new FileLoadException("not a valid XBIN file");
}
var loadSize = new Size(0, 0);
var canvas = page.Canvas;
document.ICEColours = header.NonBlink;
ResizeCanvasWidth(fs, document, canvas, header);
loadSize.Width = (document.EditMode && header.Width > canvas.Size.Width) ? canvas.Size.Width : header.Width;
loadSize.Height = (document.EditMode && header.Height > canvas.Size.Height) ? canvas.Size.Height : header.Height;
if (header.Palette)
{
page.Palette.Load(br, 16, 2);
}
if (header.Font)
{
var f = new BitFont(header.Font512 ? 512 : 256, 8, header.FontSize, BitFont.StandardCodePage);
f.Load(br);
#if DEBUG
/* Used to save an XBIN font for use in PabloDraw
*
* Stream s = new FileStream("c:\\font.fnt", FileMode.Create);
* BinaryWriter bw = new BinaryWriter(s);
* f.Save(bw);
* bw.Close();
* s.Close();
* /*
*/
#endif
page.Font = f;
}
ResizeCanvasHeight(document, canvas, loadSize.Height);
var ce = new CanvasElement(32, 7);
var args = new WaitEventArgs();
if (header.Compress)
{
for (int y = 0; y < loadSize.Height; y++)
{
int x = 0;
while (x < header.Width)
{
document.OnWait(args);
if (args.Exit)
{
break;
}
int countbyte = br.ReadByte();
if (countbyte == -1)
{
break;
}
int runlength = (countbyte & 0x3F) + 1;
switch ((CompressionType)(countbyte & 0xc0))
{
case CompressionType.NoCompression:
while (runlength > 0)
{
ce.Character = br.ReadByte();
ce.Attribute = br.ReadByte();
if (x < canvas.Size.Width)
{
canvas[x, y] = ce;
}
x++;
runlength--;
}
break;
case CompressionType.Character:
ce.Character = br.ReadByte();
while (runlength > 0)
{
ce.Attribute = br.ReadByte();
if (x < canvas.Size.Width)
{
canvas[x, y] = ce;
}
x++;
runlength--;
}
break;
case CompressionType.Attribute:
ce.Attribute = br.ReadByte();
while (runlength > 0)
{
ce.Character = br.ReadByte();
if (x < canvas.Size.Width)
{
canvas[x, y] = ce;
}
x++;
runlength--;
}
break;
case CompressionType.Both:
ce.Character = br.ReadByte();
ce.Attribute = br.ReadByte();
while (runlength > 0)
{
if (x < canvas.Size.Width)
{
canvas[x, y] = ce;
}
x++;
runlength--;
}
break;
}
}
}
}
else
{
for (int y = 0; y < loadSize.Height; y++)
{
for (int x = 0; x < header.Width; x++)
{
document.OnWait(args);
if (args.Exit)
{
break;
}
ce.Character = br.ReadByte();
ce.Attribute = br.ReadByte();
if (x < canvas.Size.Width)
{
canvas[x, y] = ce;
}
}
}
}
}
catch (EndOfStreamException)
{
// reached end of file, so we're okay
}
}
