Java Foundation Classes in a Nutshell

Table 4−8: AlphaComposite Compositing Rules (continued)

Rule Fs Fd Description

SRC_IN Ad 0 This rule draws the source color using the

transpar ency of the destination. Where the

destination is fully opaque, it is replaced with an

opaque version of the source. Where the

destination is fully transparent, it remains fully

transpar ent. Wher e the destination is translucent, it

is replaced with an equally translucent version of

the source. The color of the destination is never

blended with the color of the source.

SRC_OUT 1-Ad 0 This is the inverse of the SRC_IN rule. It draws the

source color using the inverse of the destination

transpar ency. Wher e the destination is opaque, it

becomes transparent. Where the destination is

transpar ent, it is replaced with an opaque version

of the source. Where the destination is translucent,

it is replaced with an inversely translucent version

of the source.

DST_IN 0 As This rule ignores the color of the source, but

modifies the destination based on the transparency

of the source. Where the source is transparent, the

destination becomes transparent. Where the source

is opaque, the destination is unmodified. Where

the source is translucent, the destination becomes

corr espondingly translucent.

DST_OUT 0 1-As This rule is the inverse of the DST_IN rule. It

ignor es the source color but modifies the

destination based on the inverse of the source

transpar ency. Wher e the source ...