If the source image contains transparent pixels, the corresponding pixels in the destination image must be left untouched. If the source image contains partially transparent pixels, a compositing operation must be performed with the destination pixels, leaving all pixels of the destination image fully opaque.
If img
is the same as the destination of this Graphics object, the result is undefined. For copying areas within an Image
, {@link #copyArea copyArea} should be used instead.
anchor
is not a legal value
@throws NullPointerException if img
is null
@see Image
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