color ~master (2020-04-14T12:21:13Z)

colorFromString

std experimental color

Create a color from a string.

This version of the function is nothrow, @nogc.

  1. Color colorFromString(const(char)[] str)
  2. bool colorFromString(const(char)[] str, Color color)
    pure nothrow @safe @nogc
    bool
    colorFromString
    (
    Color = RGB8
    )
    (
    scope const(char)[] str
    ,
    out Color color
    )

Parameters

color Color

Receives the _color expressed by the string.

Return Value

Type: bool

true if a _color was successfully parsed from the string, false otherwise.

Examples

// common hex formats supported:

// 3 digits
assert(colorFromString("F80") == RGB8(0xFF, 0x88, 0x00));
assert(colorFromString("#F80") == RGB8(0xFF, 0x88, 0x00));
assert(colorFromString("$F80") == RGB8(0xFF, 0x88, 0x00));

// 6 digits
assert(colorFromString("FF8000") == RGB8(0xFF, 0x80, 0x00));
assert(colorFromString("#FF8000") == RGB8(0xFF, 0x80, 0x00));
assert(colorFromString("$FF8000") == RGB8(0xFF, 0x80, 0x00));

// 4/8 digita (/w alpha)
assert(colorFromString!RGBA8("#8C41") == RGBA8(0xCC, 0x44, 0x11, 0x88));
assert(colorFromString!RGBA8("#80CC4401") == RGBA8(0xCC, 0x44, 0x01, 0x80));

// named colors (case-insensitive)
assert(colorFromString("red") == RGB8(0xFF, 0x0, 0x0));
assert(colorFromString("WHITE") == RGB8(0xFF, 0xFF, 0xFF));
assert(colorFromString("LightGoldenrodYellow") == RGB8(250,250,210));

// parse failure
RGB8 c;
assert(colorFromString("Ultraviolet", c) == false);

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