m_backgroundBitmap
for (float y = 0; y < bounds.bottom; y += m_backgroundBitmap->Bounds().Height())
for (float x = 0; x < bounds.right; x += m_backgroundBitmap->Bounds().Width())
DrawBitmapAsync(m_backgroundBitmap, BPoint(x, y));
if (m_backgroundBitmap)
delete m_backgroundBitmap;
m_backgroundBitmap = new BBitmap(bitmap);
BBitmap *m_backgroundBitmap;