Color.fromARGB constructor Null safety
Construct a color from the lower 8 bits of four integers.
a
is the alpha value, with 0 being transparent and 255 being fully opaque.r
is red, from 0 to 255.g
is green, from 0 to 255.b
is blue, from 0 to 255.
Out of range values are brought into range using modulo 255.
See also fromRGBO, which takes the alpha value as a floating point value.
Implementation
const Color.fromARGB(int a, int r, int g, int b) :
value = (((a & 0xff) << 24) |
((r & 0xff) << 16) |
((g & 0xff) << 8) |
((b & 0xff) << 0)) & 0xFFFFFFFF;