KoDumbColorDisplayRenderer Class Reference

#include <KoColorDisplayRendererInterface.h>

Inheritance diagram for KoDumbColorDisplayRenderer:

Public Member Functions
KoColor	approximateFromRenderedQColor (const QColor &c) const override
KoColor	fromHsv (int h, int s, int v, int a=255) const override
void	getHsv (const KoColor &srcColor, int *h, int *s, int *v, int *a=0) const override
const KoColorSpace *	getPaintingColorSpace () const override
	getColorSpace
qreal	maxVisibleFloatValue (const KoChannelInfo *chaninfo) const override
qreal	minVisibleFloatValue (const KoChannelInfo *chaninfo) const override
QColor	toQColor (const KoColor &c, bool proofToPaintColors=false) const override
QImage	toQImage (const KoColorSpace *srcColorSpace, const quint8 *data, QSize size, bool proofPaintColors=false) const override
	Convert a consecutive block of pixel data to an ARGB32 QImage.
Public Member Functions inherited from KoColorDisplayRendererInterface
	KoColorDisplayRendererInterface ()
	~KoColorDisplayRendererInterface () override

Static Public Member Functions
static KoColorDisplayRendererInterface *	instance ()

Additional Inherited Members
Signals inherited from KoColorDisplayRendererInterface
void	displayConfigurationChanged ()

Detailed Description

The default conversion class that just calls KoColor::toQColor() conversion implementation which effectively renders the color into sRGB color space.

Definition at line 99 of file KoColorDisplayRendererInterface.h.

Member Function Documentation

approximateFromRenderedQColor()

KoColor KoDumbColorDisplayRenderer::approximateFromRenderedQColor ( const QColor & c ) const

overridevirtual

This tries to approximate a rendered QColor into the KoColor of the painting color space. Please note, that in most of the cases the exact reverse transformation does not exist, so the resulting color will be only a rough approximation. Never try to do a round trip like that:

// r will never be equal to c! r = approximateFromRenderedQColor(toQColor(c));

Implements KoColorDisplayRendererInterface.

Definition at line 40 of file KoColorDisplayRendererInterface.cpp.

{
    KoColor color;
    color.fromQColor(c);
    return color;
}

References KoColor::fromQColor().

fromHsv()

KoColor KoDumbColorDisplayRenderer::fromHsv ( int h, int s, int v, int a = 255 ) const

overridevirtual

Implements KoColorDisplayRendererInterface.

Definition at line 47 of file KoColorDisplayRendererInterface.cpp.

{
    h = qBound(0, h, 359);
    s = qBound(0, s, 255);
    v = qBound(0, v, 255);
    a = qBound(0, a, 255);
    QColor qcolor(QColor::fromHsv(h, s, v, a));
    return KoColor(qcolor, KoColorSpaceRegistry::instance()->rgb8());
}

References KoColorSpaceRegistry::instance(), and v.

getHsv()

void KoDumbColorDisplayRenderer::getHsv ( const KoColor & srcColor, int * h, int * s, int * v, int * a = 0 ) const

overridevirtual

Implements KoColorDisplayRendererInterface.

Definition at line 57 of file KoColorDisplayRendererInterface.cpp.

{
    QColor qcolor = toQColor(srcColor);
    qcolor.getHsv(h, s, v, a);
}

References toQColor(), and v.

getPaintingColorSpace()

const KoColorSpace * KoDumbColorDisplayRenderer::getPaintingColorSpace ( ) const

overridevirtual

getColorSpace

Returns

the painting color space, this is useful for determining the transform.

Implements KoColorDisplayRendererInterface.

Definition at line 80 of file KoColorDisplayRendererInterface.cpp.

{
    return KoColorSpaceRegistry::instance()->rgb8();
}

References KoColorSpaceRegistry::instance(), and KoColorSpaceRegistry::rgb8().

instance()

KoColorDisplayRendererInterface * KoDumbColorDisplayRenderer::instance ( )

static

Definition at line 63 of file KoColorDisplayRendererInterface.cpp.

{
    return s_instance;
}

maxVisibleFloatValue()

qreal KoDumbColorDisplayRenderer::maxVisibleFloatValue ( const KoChannelInfo * chaninfo ) const

overridevirtual

Returns

the maximum value of a floating point channel that can be seen on screen. In normal situation it is 1.0. When the user changes exposure the value varies.

Implements KoColorDisplayRendererInterface.

Definition at line 74 of file KoColorDisplayRendererInterface.cpp.

{
    Q_ASSERT(chaninfo);
    return chaninfo->getUIMax();
}

References KoChannelInfo::getUIMax().

minVisibleFloatValue()

qreal KoDumbColorDisplayRenderer::minVisibleFloatValue ( const KoChannelInfo * chaninfo ) const

overridevirtual

Returns

the minimum value of a floating point channel that can be seen on screen

Implements KoColorDisplayRendererInterface.

Definition at line 68 of file KoColorDisplayRendererInterface.cpp.

{
    Q_ASSERT(chaninfo);
    return chaninfo->getUIMin();
}

References KoChannelInfo::getUIMin().

toQColor()

QColor KoDumbColorDisplayRenderer::toQColor ( const KoColor & c, bool proofToPaintColors = false ) const

overridevirtual

Convert the color c to a custom QColor that will be displayed by the widget on screen. Please note, that the reverse conversion may simply not exist.

Parameters

proofPaintColors

optionally adjust the color data to painting gamut first

Implements KoColorDisplayRendererInterface.

Definition at line 34 of file KoColorDisplayRendererInterface.cpp.

{
    Q_UNUSED(proofToPaintColors);
    return c.toQColor();
}

References KoColor::toQColor().

toQImage()

QImage KoDumbColorDisplayRenderer::toQImage ( const KoColorSpace * srcColorSpace, const quint8 * data, QSize size, bool proofPaintColors = false ) const

overridevirtual

Convert a consecutive block of pixel data to an ARGB32 QImage.

Parameters

srcColorSpace	the colorspace the pixel data is in
data	a pointer to a byte array with color data; must cover the requested image size
size	defines the dimensions of the resulting image
proofPaintColors	optionally adjust the color data to painting gamut first

Returns

a QImage that can be displayed

Implements KoColorDisplayRendererInterface.

Definition at line 26 of file KoColorDisplayRendererInterface.cpp.

{
    Q_UNUSED(proofPaintColors); // dumb converter doesn't know a painting color space
    return srcColorSpace->convertToQImage(data, size.width(), size.height(), 0,
                                          KoColorConversionTransformation::internalRenderingIntent(),
                                          KoColorConversionTransformation::internalConversionFlags());
}

References KoColorSpace::convertToQImage(), KoColorConversionTransformation::internalConversionFlags(), and KoColorConversionTransformation::internalRenderingIntent().

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

• libs/pigment/KoColorDisplayRendererInterface.h
• libs/pigment/KoColorDisplayRendererInterface.cpp