Zoom to width
The proportions of the bitmap will be kept.
Horizontal alignment=center, left or right
The bitmap has already been fitted into the lateral boundaries. Consequently it can neither be better centered nor located more on the right or on the left.
Vertical alignment=center
The bitmap will be vertically centered.
Vertical alignment=up
The bitmap will be fitted into the upper boundary.
Vertical alignment=bottom
The bitmap will be fitted into the lower boundary.