public override void MergeInto(uint x, uint y, OneBppBitmap sourceBitmap, MergeMode mergeMode)
{
if (sourceBitmap.ByteDirection != ByteDirectionSpec.TopToBottomLsbFirst ||
sourceBitmap.ByteDirection != ByteDirectionSpec.TopToBottomMsbFirst)
{
throw new NotImplementedException("MergeInto with different ByteDirections in not implemented yet");
}
var from = sourceBitmap as OneBppBitmapWithPages;
var fromWidth = x + from.Width < this.Width
? from.Width
: from.Width - (this.Width - (x + from.Width));
var yPage = y / 8;
var yBits = y % 8;
if (yBits != 0)
{
throw new NotImplementedException("MergeInto with y not on byte boundry not implemented yet");
}
bool flipByte = this.ByteDirection != from.ByteDirection;
for (int yByte = 0; yByte < from.HeightInBytes; yByte++)
{
if (yPage + yByte < this.HeightInBytes)
{
var destinationMemory = this.Buffer.Slice(( int )(this.Width * (yPage + yByte)), ( int )this.Width);
var sourceMemory = from.Buffer.Slice(( int )(from.Width * yByte), ( int )fromWidth);
OneBppBitmapWithPages.MergeInto(sourceMemory, destinationMemory, mergeMode);
}
}
}
public static OneBppBitmap FromBitmap(uint width, uint height, OneBppBitmap bitmap)
{
OneBppBitmap result = null;
switch (bitmap.ByteDirection)
{
case ByteDirectionSpec.LeftToRightLsbFirst:
case ByteDirectionSpec.LeftToRightMsbFirst:
throw new NotImplementedException();
case ByteDirectionSpec.TopToBottomLsbFirst:
result = new OneBppBitmapWithPages(width, height, false);
result.ByteDirection = bitmap.ByteDirection;
break;
case ByteDirectionSpec.TopToBottomMsbFirst:
result = new OneBppBitmapWithPages(width, height, true);
result.ByteDirection = bitmap.ByteDirection;
break;
}
return(result);
}