QRgba64 Class
The QRgba64 struct contains a 64-bit RGB color. More...
| Header: | #include <QRgba64> |
| qmake: | QT += gui |
| Since: | Qt 5.6 |
This class was introduced in Qt 5.6.
Public Functions
| quint8 | alpha8() const |
| quint16 | alpha() const |
| quint8 | blue8() const |
| quint16 | blue() const |
| quint8 | green8() const |
| quint16 | green() const |
| bool | isOpaque() const |
| bool | isTransparent() const |
| QRgba64 | premultiplied() const |
| quint8 | red8() const |
| quint16 | red() const |
| void | setAlpha(quint16 alpha) |
| void | setBlue(quint16 blue) |
| void | setGreen(quint16 green) |
| void | setRed(quint16 red) |
| uint | toArgb32() const |
| ushort | toRgb16() const |
| QRgba64 | unpremultiplied() const |
| quint64 | operator quint64() const |
| QRgba64 | operator=(quint64 rgba) |
Static Public Members
| QRgba64 | fromArgb32(uint rgb) |
| QRgba64 | fromRgba64(quint64 c) |
| QRgba64 | fromRgba64(quint16 r, quint16 g, quint16 b, quint16 a) |
| QRgba64 | fromRgba(quint8 red, quint8 green, quint8 blue, quint8 alpha) |
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.
Member Function Documentation
quint8 QRgba64::alpha8() const
Returns the alpha channel as an 8-bit.
quint16 QRgba64::alpha() const
Returns the 16-bit alpha channel.
See also setAlpha().
quint8 QRgba64::blue8() const
Returns the blue color component as an 8-bit.
quint16 QRgba64::blue() const
Returns the 16-bit blue color component.
See also setBlue().
[static] QRgba64 QRgba64::fromArgb32(uint rgb)
Constructs a QRgba64 value from the 32bit ARGB value rgb.
See also fromRgba().
[static] QRgba64 QRgba64::fromRgba64(quint64 c)
Returns c as a QRgba64 struct.
See also fromArgb32().
[static] QRgba64 QRgba64::fromRgba64(quint16 r, quint16 g, quint16 b, quint16 a)
Returns the QRgba64 quadruplet (r, g, b, a).
See also fromRgba().
[static] QRgba64 QRgba64::fromRgba(quint8 red, quint8 green, quint8 blue, quint8 alpha)
Constructs a QRgba64 value from the four 8-bit color channels red, green, blue and alpha.
See also fromArgb32().
quint8 QRgba64::green8() const
Returns the green color component as an 8-bit.
quint16 QRgba64::green() const
Returns the 16-bit green color component.
See also setGreen().
bool QRgba64::isOpaque() const
Returns whether the color is fully opaque.
See also isTransparent() and alpha().
bool QRgba64::isTransparent() const
Returns whether the color is transparent.
See also isOpaque() and alpha().
QRgba64 QRgba64::premultiplied() const
Returns the color with the alpha premultiplied.
See also unpremultiplied().
quint8 QRgba64::red8() const
Returns the red color component as an 8-bit.
quint16 QRgba64::red() const
Returns the 16-bit red color component.
See also setRed().
void QRgba64::setAlpha(quint16 alpha)
Sets the alpha of this color to alpha.
See also alpha().
void QRgba64::setBlue(quint16 blue)
Sets the blue color component of this color to blue.
See also blue().
void QRgba64::setGreen(quint16 green)
Sets the green color component of this color to green.
See also green().
void QRgba64::setRed(quint16 red)
Sets the red color component of this color to red.
See also red().
uint QRgba64::toArgb32() const
Returns the color as a 32-bit ARGB value.
See also fromArgb32().
ushort QRgba64::toRgb16() const
Returns the color as a 16-bit RGB value.
See also toArgb32().
QRgba64 QRgba64::unpremultiplied() const
Returns the color with the alpha unpremultiplied.
See also premultiplied().
quint64 QRgba64::operator quint64() const
Returns the color as a 64bit unsigned integer
QRgba64 QRgba64::operator=(quint64 rgba)
Assigns the value rgba to this instance of QRgba64 and returns it.