Member Function Documentation

Rgba32::Rgba32(float r, float g, float b, float a = 1.f)

Constructs an Rgba32 object from individual color components r g b and a. Default value for alpha channel is 1.0, which is fully opaque.

The given individual color component values should be in range 0.0-1.0. If the values are out of range, the converted integer values are clamped to range 0-255. Negative values are converted to positive values.

See also setRed(), setGreen(), setBlue(), and setAlpha().

Rgba32::Rgba32(uint32_t r, uint32_t g, uint32_t b, uint32_t a = 255u)

Constructs an Rgba32 object from individual color components r g b a. Default value for alpha channel is 255, which is fully opaque.

Only lower 8 bits of the given component values are used.

See also setRed(), setGreen(), setBlue(), and setAlpha().

Rgba32::Rgba32(uint32_t value = 0)

Constructs an Rgba32 object from value. The class assumes value to be in 0xAARRGGBB format. Default value of value is 0.

See also setRed(), setGreen(), setBlue(), and setAlpha().

uint32_t Rgba32::alpha() const

Returns alpha component of current color value.

See also setAlpha(), green(), blue(), and red().

uint32_t Rgba32::blue() const

Returns blue component of current color value.

See also setBlue(), green(), red(), and alpha().

uint32_t Rgba32::green() const

Returns green component of current color value.

See also setGreen(), red(), blue(), and alpha().

bool Rgba32::invisible() const

Returns true if the color is invisible, i.e. value of alpha component is 0.

Qul::PlatformInterface::Rgba32 Rgba32::premultiplied() const

Converts current Rgba32 into a premultiplied Rgba32.

uint32_t Rgba32::red() const

Returns red component of current color value.

See also setRed(), green(), blue(), and alpha().

void Rgba32::setAlpha(uint32_t value)

Sets alpha component of current color value. Only lower 8 bits from value are used.

See also alpha(), setGreen(), setBlue(), and setRed().

void Rgba32::setBlue(uint32_t value)

Sets blue component of current color value. Only lower 8 bits from value are used.

See also blue(), setGreen(), setRed(), and setAlpha().

void Rgba32::setGreen(uint32_t value)

Sets green component of current color value. Only lower 8 bits from value are used.

See also green(), setRed(), setBlue(), and setAlpha().

void Rgba32::setRed(uint32_t value)

Sets red component of current color value. Only lower 8 bits from value are used.

See also red(), setGreen(), setBlue(), and setAlpha().