public override void DrawImage(GraphicsHandler graphics, Rectangle source, Rectangle destination)
{
var bd = bmp.Lock();
// we have to draw to a temporary bitmap pixel by pixel
unsafe
{
fixed(byte *pSrc = Control)
{
var dest = (byte *)bd.Data;
var src = pSrc;
var scany = rowStride;
if (graphics.Flipped)
{
src += Control.Length - scany;
scany = -scany;
}
dest += source.Top * bd.ScanWidth;
dest += source.Left * sizeof(uint);
src += source.Top * scany;
src += source.Left;
for (int y = source.Top; y <= source.Bottom; y++)
{
var srcrow = src;
var destrow = (uint *)dest;
for (int x = source.Left; x <= source.Right; x++)
{
var palindex = *srcrow;
var color = colors[palindex];
* destrow = bd.TranslateArgbToData(color);
destrow++;
srcrow++;
}
dest += bd.ScanWidth;
src += scany;
}
}
}
bmp.Unlock(bd);
bmp.DrawImage(graphics, source, destination);
}
void UpdateBitmap(Rectangle source, bool flipped = false)
{
var bd = bmp.Lock();
// we have to draw to a temporary bitmap pixel by pixel
unsafe
{
fixed(byte *pSrc = Control)
{
var dest = (byte *)bd.Data;
var src = pSrc;
var scany = rowStride;
if (flipped)
{
src += Control.Length - scany;
scany = -scany;
}
dest += source.Top * bd.ScanWidth;
dest += source.Left * sizeof(uint);
src += source.Top * scany;
src += source.Left;
for (int y = source.Top; y <= source.Bottom; y++)
{
var srcrow = src;
var destrow = (uint *)dest;
for (int x = source.Left; x <= source.Right; x++)
{
var palindex = *srcrow;
var color = colors[palindex];
* destrow = bd.TranslateArgbToData(color);
destrow++;
srcrow++;
}
dest += bd.ScanWidth;
src += scany;
}
}
}
bmp.Unlock(bd);
}
