QRgba64 结构包含 64 位 RGB 颜色。 更多...
头: | #include <QRgba64> |
qmake: | QT += gui |
Since: | Qt 5.6 |
该类在 Qt 5.6 引入。
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 ) |
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 ) |
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.
Returns the alpha channel as an 8-bit.
Returns the 16-bit alpha channel.
另请参阅 setAlpha ().
Returns the blue color component as an 8-bit.
Returns the 16-bit blue color component.
另请参阅 setBlue ().
[static]
QRgba64
QRgba64::
fromArgb32
(
uint
rgb
)
构造 QRgba64 value from the 32bit ARGB value rgb .
另请参阅 fromRgba ().
[static]
QRgba64
QRgba64::
fromRgba64
(
quint64
c
)
返回 c 作为 QRgba64 struct.
另请参阅 fromArgb32 ().
[static]
QRgba64
QRgba64::
fromRgba64
(
quint16
r
,
quint16
g
,
quint16
b
,
quint16
a
)
返回 QRgba64 四元组 ( r , g , b , a ).
另请参阅 fromRgba ().
[static]
QRgba64
QRgba64::
fromRgba
(
quint8
red
,
quint8
green
,
quint8
blue
,
quint8
alpha
)
构造 QRgba64 value from the four 8-bit color channels red , green , blue and alpha .
另请参阅 fromArgb32 ().
Returns the green color component as an 8-bit.
Returns the 16-bit green color component.
另请参阅 setGreen ().
Returns whether the color is fully opaque.
另请参阅 isTransparent () 和 alpha ().
Returns whether the color is transparent.
Returns the color with the alpha premultiplied.
另请参阅 unpremultiplied ().
Returns the red color component as an 8-bit.
Returns the 16-bit red color component.
另请参阅 setRed ().
将此颜色的 Alpha 设为 alpha .
另请参阅 alpha ().
将此颜色的蓝色颜色分量设为 blue .
另请参阅 blue ().
将此颜色的绿色颜色分量设为 green .
另请参阅 green ().
将此颜色的红色颜色分量设为 red .
另请参阅 red ().
Returns the color as a 32-bit ARGB value.
另请参阅 fromArgb32 ().
Returns the color as a 16-bit RGB value.
另请参阅 toArgb32 ().
Returns the color with the alpha unpremultiplied.
另请参阅 premultiplied ().
Returns the color as a 64bit unsigned integer
Assigns the value rgba to this instance of QRgba64 and returns it.