VirtualChannelInfo Class Reference

#include <virtual_channel_info.h>

Public Types
enum	Type {   REAL , HUE , SATURATION , LIGHTNESS ,   ALL_COLORS }

Public Member Functions
KoChannelInfo *	channelInfo () const
int	channelSize () const
bool	isAlpha () const
QString	name () const
int	pixelIndex () const
Type	type () const
KoChannelInfo::enumChannelValueType	valueType () const
	VirtualChannelInfo ()
	VirtualChannelInfo (Type type, int pixelIndex, KoChannelInfo *realChannelInfo, const KoColorSpace *cs)

Private Attributes
int	m_channelSizeOverride {4}
QString	m_nameOverride
int	m_pixelIndex {0}
KoChannelInfo *	m_realChannelInfo {nullptr}
Type	m_type {REAL}
KoChannelInfo::enumChannelValueType	m_valueTypeOverride {KoChannelInfo::FLOAT32}

Detailed Description

This class represents a virtual channel that can have a curve in curves filter. Virtual channel can be of various types:

• REAL — represents a real color channel of the image, like R, G, B or A
• LIGHTNESS — lightness virtual channel: represents L channel of the image separation into Lab.
• ALL_COLORS — represents a grouped channel, combining all the color channels of the image. E.g. R+G+B of an RGB image

Definition at line 29 of file virtual_channel_info.h.

Member Enumeration Documentation

Type

enum VirtualChannelInfo::Type

Enumerator
REAL
HUE
SATURATION
LIGHTNESS
ALL_COLORS

Definition at line 32 of file virtual_channel_info.h.

              {
        REAL,
        HUE,
        SATURATION,
        LIGHTNESS,
        ALL_COLORS
    };

Constructor & Destructor Documentation

VirtualChannelInfo() [1/2]

VirtualChannelInfo::VirtualChannelInfo

(

)

Definition at line 14 of file virtual_channel_info.cpp.

    : m_type(LIGHTNESS),
      m_pixelIndex(-1),
      m_realChannelInfo(0)
{
}

VirtualChannelInfo() [2/2]

VirtualChannelInfo::VirtualChannelInfo	(	Type	type,
		int	pixelIndex,
		KoChannelInfo *	realChannelInfo,
		const KoColorSpace *	cs )

Definition at line 21 of file virtual_channel_info.cpp.

    : m_type(type),
      m_pixelIndex(pixelIndex),
      m_realChannelInfo(realChannelInfo)
{
    if (m_type == HUE) {
        m_nameOverride = i18n("Hue");
        m_valueTypeOverride = KoChannelInfo::FLOAT32;
        m_channelSizeOverride = 4;
    } else if (m_type == SATURATION) {
        m_nameOverride = i18n("Saturation");
        m_valueTypeOverride = KoChannelInfo::FLOAT32;
        m_channelSizeOverride = 4;
    } else if (m_type == LIGHTNESS) {
        m_nameOverride = i18nc("Lightness L*a*b*", "Lightness");
        m_valueTypeOverride = KoChannelInfo::FLOAT32;
        m_channelSizeOverride = 4;
    } else if (m_type == ALL_COLORS) {
        const QList<KoChannelInfo*> channels = cs->channels();
 
        if (cs->colorModelId() == RGBAColorModelID) {
            m_nameOverride = "RGB";
        } else if (cs->colorModelId() == CMYKAColorModelID) {
            m_nameOverride = "CMYK";
        } else if (cs->colorModelId() == XYZAColorModelID) {
            m_nameOverride = "XYZ";
        } else if (cs->colorModelId() == LABAColorModelID) {
            m_nameOverride = "L*a*b*";
        } else if (cs->colorModelId() == YCbCrAColorModelID) {
            m_nameOverride = "YCbCr";
        } else {
            m_nameOverride = cs->colorModelId().id();
        }
        m_valueTypeOverride = channels.first()->channelValueType();
        m_channelSizeOverride = channels.first()->size();
    }
}

References ALL_COLORS, KoColorSpace::channels, CMYKAColorModelID, KoColorSpace::colorModelId(), KoChannelInfo::FLOAT32, HUE, KoID::id(), LABAColorModelID, LIGHTNESS, m_channelSizeOverride, m_nameOverride, m_type, m_valueTypeOverride, RGBAColorModelID, SATURATION, XYZAColorModelID, and YCbCrAColorModelID.

Member Function Documentation

channelInfo()

KoChannelInfo * VirtualChannelInfo::channelInfo

(

)

const

Returns

a pointer to a KoChannelInfo structure iff the channel type is 'REAL'. Returns null of all the other types.

Definition at line 66 of file virtual_channel_info.cpp.

                                                     {
    return m_realChannelInfo;
}

References m_realChannelInfo.

channelSize()

int VirtualChannelInfo::channelSize

(

)

const

Definition at line 82 of file virtual_channel_info.cpp.

                                          {
    return m_type == REAL ? m_realChannelInfo->size() : m_channelSizeOverride;
}

References m_channelSizeOverride, m_realChannelInfo, m_type, REAL, and KoChannelInfo::size().

isAlpha()

bool VirtualChannelInfo::isAlpha

(

)

const

Definition at line 86 of file virtual_channel_info.cpp.

{
    return m_type == REAL &&
        m_realChannelInfo->channelType() == KoChannelInfo::ALPHA;
}

References KoChannelInfo::ALPHA, KoChannelInfo::channelType(), m_realChannelInfo, m_type, and REAL.

name()

QString VirtualChannelInfo::name

(

)

const

Definition at line 70 of file virtual_channel_info.cpp.

                                       {
    return m_type == REAL ? m_realChannelInfo->name() : m_nameOverride;
}

References m_nameOverride, m_realChannelInfo, m_type, KoChannelInfo::name(), and REAL.

pixelIndex()

int VirtualChannelInfo::pixelIndex

(

)

const

Index of this channel in a pixel.

Returns

-1 for all virtual channels.

Definition at line 74 of file virtual_channel_info.cpp.

                                         {
    return m_pixelIndex;
}

References m_pixelIndex.

type()

VirtualChannelInfo::Type VirtualChannelInfo::type

(

)

const

Definition at line 62 of file virtual_channel_info.cpp.

                                                      {
    return m_type;
}

References m_type.

valueType()

KoChannelInfo::enumChannelValueType VirtualChannelInfo::valueType

(

)

const

Definition at line 78 of file virtual_channel_info.cpp.

                                                                      {
    return m_type == REAL ? m_realChannelInfo->channelValueType() : m_valueTypeOverride;
}

References KoChannelInfo::channelValueType(), m_realChannelInfo, m_type, m_valueTypeOverride, and REAL.

Member Data Documentation

m_channelSizeOverride

int VirtualChannelInfo::m_channelSizeOverride {4}

private

Definition at line 73 of file virtual_channel_info.h.

{4};

m_nameOverride

QString VirtualChannelInfo::m_nameOverride

private

Definition at line 71 of file virtual_channel_info.h.

m_pixelIndex

int VirtualChannelInfo::m_pixelIndex {0}

private

Definition at line 68 of file virtual_channel_info.h.

{0};

m_realChannelInfo

KoChannelInfo* VirtualChannelInfo::m_realChannelInfo {nullptr}

private

Definition at line 69 of file virtual_channel_info.h.

{nullptr};

m_type

Type VirtualChannelInfo::m_type {REAL}

private

Definition at line 67 of file virtual_channel_info.h.

{REAL};

m_valueTypeOverride

KoChannelInfo::enumChannelValueType VirtualChannelInfo::m_valueTypeOverride {KoChannelInfo::FLOAT32}

private

Definition at line 72 of file virtual_channel_info.h.

{KoChannelInfo::FLOAT32};

---

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

• plugins/filters/colorsfilters/virtual_channel_info.h
• plugins/filters/colorsfilters/virtual_channel_info.cpp