/// <summary>
/// Ensures that the Display is completely inside the DBuffer.
/// </summary>
protected void EnsureDisplayInDBuffer()
{
//PaintDoubleBuffer(); // not necassary, since already down immediately before calling EnsureDisplayInDBuffer.
int dy = DBufferTop - ScaledTopOffset;
if (dy > 0)
{
dy = Math.Max(dy, DBufferSpace);
DBufferTop -= dy;
EnsureDoubleBuffer();
doubleBuffer.ScrollDown(dy);
PaintDoubleBuffer();
}
if (dy < 0)
{
dy = -dy;
dy = Math.Max(dy, DBufferSpace);
DBufferTop += dy;
EnsureDoubleBuffer();
doubleBuffer.ScrollUp(dy);
PaintDoubleBuffer();
}
}
