class QRgba64#

The QRgba64 struct contains a 64-bit RGB color. More

Synopsis#

Methods#

Static functions#

Note

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Detailed Description#

QRgba64 is a 64-bit data-structure containing four 16-bit color channels: Red, green, blue and alpha.

QRgba64 can be used as a replacement for QRgb when higher precision is needed. In particular a premultiplied QRgba64 can operate on unpremultiplied QRgb without loss of precision except for alpha 0.

See also

QRgb QColor

class Shifts#
__init__()#
alpha()#
Return type:

int

Returns the 16-bit alpha channel.

See also

setAlpha()

alpha8()#
Return type:

int

Returns the alpha channel as an 8-bit.

blue()#
Return type:

int

Returns the 16-bit blue color component.

See also

setBlue()

blue8()#
Return type:

int

Returns the blue color component as an 8-bit.

static fromArgb32(rgb)#
Parameters:

rgb – int

Return type:

QRgba64

Constructs a QRgba64 value from the 32bit ARGB value rgb.

See also

fromRgba()

static fromRgba(red, green, blue, alpha)#
Parameters:
  • red – int

  • green – int

  • blue – int

  • alpha – int

Return type:

QRgba64

Constructs a QRgba64 value from the four 8-bit color channels red, green, blue and alpha.

See also

fromArgb32()

static fromRgba64(red, green, blue, alpha)#
Parameters:
  • red – int

  • green – int

  • blue – int

  • alpha – int

Return type:

QRgba64

Returns the QRgba64 quadruplet (r, g, b, a).

See also

fromRgba()

static fromRgba64(c)
Parameters:

c – int

Return type:

QRgba64

Returns c as a QRgba64 struct.

See also

fromArgb32()

green()#
Return type:

int

Returns the 16-bit green color component.

See also

setGreen()

green8()#
Return type:

int

Returns the green color component as an 8-bit.

isOpaque()#
Return type:

bool

Returns whether the color is fully opaque.

isTransparent()#
Return type:

bool

Returns whether the color is transparent.

See also

isOpaque() alpha()

premultiplied()#
Return type:

QRgba64

Returns the color with the alpha premultiplied.

red()#
Return type:

int

Returns the 16-bit red color component.

See also

setRed()

red8()#
Return type:

int

Returns the red color component as an 8-bit.

setAlpha(_alpha)#
Parameters:

_alpha – int

Sets the alpha of this color to alpha.

See also

alpha()

setBlue(_blue)#
Parameters:

_blue – int

Sets the blue color component of this color to blue.

See also

blue()

setGreen(_green)#
Parameters:

_green – int

Sets the green color component of this color to green.

See also

green()

setRed(_red)#
Parameters:

_red – int

Sets the red color component of this color to red.

See also

red()

toArgb32()#
Return type:

int

Returns the color as a 32-bit ARGB value.

See also

fromArgb32()

toRgb16()#
Return type:

int

Returns the color as a 16-bit RGB value.

See also

toArgb32()

unpremultiplied()#
Return type:

QRgba64

Returns the color with the alpha unpremultiplied.

See also

premultiplied()