qargb8555 Class Reference

#include <qdrawhelper_p.h>

Public Functions
quint8	alpha () const
Q_STATIC_INLINE_FUNCTION quint8	alpha (quint8 a)
qargb8555	byte_mul (quint8 a) const
Q_STATIC_INLINE_FUNCTION bool	hasAlpha ()
Q_STATIC_INLINE_FUNCTION quint8	ialpha (quint8 a)
	operator quint32 () const
qargb8555	operator+ (qargb8555 v) const
bool	operator== (const qargb8555 &v) const
	qargb8555 ()
	qargb8555 (quint32 v)
	qargb8555 (quint32p v)
	qargb8555 (const qargb8555 &v)
	qargb8555 (const qrgb555 &v)
quint32	rawValue () const
qargb8555	truncedAlpha ()

Properties
quint8	data [3]

Friends
class	qrgb555

Detailed Description

Definition at line 981 of file qdrawhelper_p.h.

Constructors and Destructors

qargb8555() [1/5]

qargb8555::qargb8555 ( )

inline

Definition at line 986 of file qdrawhelper_p.h.

{}

qargb8555() [2/5]

qargb8555::qargb8555 ( quint32  v )

inline

Definition at line 1121 of file qdrawhelper_p.h.

{
    v = quint32p(v);
    data[0] = qAlpha(v);
    const int r = qRed(v);
    const int g = qGreen(v);
    const int b = qBlue(v);
    data[1] = ((g << 2) & 0xe0) | (b >> 3);
    data[2] = ((r >> 1) & 0x7c) | (g >> 6);

}

qargb8555() [3/5]

qargb8555::qargb8555 ( quint32p  v )

inlineexplicit

Definition at line 1133 of file qdrawhelper_p.h.

{
    data[0] = qAlpha(v);
    const int r = qRed(v);
    const int g = qGreen(v);
    const int b = qBlue(v);
    data[1] = ((g << 2) & 0xe0) | (b >> 3);
    data[2] = ((r >> 1) & 0x7c) | (g >> 6);
}

qargb8555() [4/5]

qargb8555::qargb8555 ( const qargb8555 &  v )

inline

Definition at line 1143 of file qdrawhelper_p.h.

{
    data[0] = v.data[0];
    data[1] = v.data[1];
    data[2] = v.data[2];
}

qargb8555() [5/5]

qargb8555::qargb8555 ( const qrgb555 &  v )

inline

Definition at line 1150 of file qdrawhelper_p.h.

{
    data[0] = 0xff;
    data[1] = v.data & 0xff;
    data[2] = v.data >> 8;
}

Functions

alpha() [1/2]

quint8 qargb8555::alpha ( ) const

inline

Definition at line 994 of file qdrawhelper_p.h.

{ return data[0]; }

alpha() [2/2]

Q_STATIC_INLINE_FUNCTION quint8 qargb8555::alpha ( quint8  a )

inline

Definition at line 996 of file qdrawhelper_p.h.

{ return (a + 1) >> 3; }

byte_mul()

qargb8555 qargb8555::byte_mul ( quint8  a ) const

inline

Definition at line 1193 of file qdrawhelper_p.h.

{
    qargb8555 result;
    result.data[0] = (data[0] * a) >> 5;

    const quint16 x = (data[2] << 8) | data[1];
    quint16 t = (((x & 0x3e0) * a) >> 5) & 0x03e0;
    t |= (((x & 0x7c1f) * a) >> 5) & 0x7c1f;
    result.data[1] = t & 0xff;
    result.data[2] = t >> 8;
    return result;

}

hasAlpha()

Q_STATIC_INLINE_FUNCTION bool qargb8555::hasAlpha ( )

inline

Definition at line 984 of file qdrawhelper_p.h.

{ return true; }

ialpha()

Q_STATIC_INLINE_FUNCTION quint8 qargb8555::ialpha ( quint8  a )

inline

Definition at line 997 of file qdrawhelper_p.h.

{ return 0x20 - alpha(a); }

operator quint32()

qargb8555::operator quint32 ( ) const

inline

Definition at line 1157 of file qdrawhelper_p.h.

{
    const quint16 rgb = (data[2] << 8) | data[1];
    const int r = (rgb & 0x7c00);
    const int g = (rgb & 0x03e0);
    const int b = (rgb & 0x001f);
    const int tr = (r >> 7) | (r >> 12);
    const int tg = (g >> 2) | (g >> 7);
    const int tb = (b << 3) | (b >> 2);

    return qRgba(tr, tg, tb, data[0]);
}

operator+()

qargb8555 qargb8555::operator+ ( qargb8555  v ) const

inline

Definition at line 1182 of file qdrawhelper_p.h.

{
    qargb8555 t;
    t.data[0] = data[0] + v.data[0];
    const quint16 rgb =  ((data[2] + v.data[2]) << 8)
                         + (data[1] + v.data[1]);
    t.data[1] = rgb & 0xff;
    t.data[2] = rgb >> 8;
    return t;
}

operator==()

bool qargb8555::operator== ( const qargb8555 &  v ) const

inline

Definition at line 1170 of file qdrawhelper_p.h.

{
    return data[0] == v.data[0]
        && data[1] == v.data[1]
        && data[2] == v.data[2];
}

rawValue()

quint32 qargb8555::rawValue ( ) const

inline

Definition at line 1177 of file qdrawhelper_p.h.

{
    return (data[2] << 16) | (data[1] << 8) | data[0];
}

truncedAlpha()

qargb8555 qargb8555::truncedAlpha ( )

inline

Definition at line 995 of file qdrawhelper_p.h.

{ data[0] &= 0xf8; return *this; }

Friends and Related Functions

qrgb555

friend class qrgb555

friend

Definition at line 1007 of file qdrawhelper_p.h.

Properties

data

quint8 qargb8555::data[3]

private

Definition at line 1008 of file qdrawhelper_p.h.

Referenced by byte_mul(), operator+(), operator==(), qargb8555(), and qrgb555::qrgb555().

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The documentation for this class was generated from the following file:

• /src/gui/painting/qdrawhelper_p.h