KisMemento Class Reference

#include <kis_memento.h>

Inheritance diagram for KisMemento:

Public Member Functions
QRect	extent ()
void	extent (qint32 &x, qint32 &y, qint32 &w, qint32 &h)
	KisMemento (KisMementoManager *)
const quint8 *	newDefaultPixel () const
const quint8 *	oldDefaultPixel () const
void	saveNewDefaultPixel (const quint8 *pixel, quint32 pixelSize)
void	saveOldDefaultPixel (const quint8 *pixel, quint32 pixelSize)
	~KisMemento ()
Public Member Functions inherited from KisShared
bool	deref ()
bool	ref ()
int	refCount ()
QAtomicInt *	sharedWeakReference ()

Private Member Functions
void	updateExtent (qint32 col, qint32 row, QMutex *currentMementoExtentLock)

Private Attributes
qint32	m_extentMaxX
qint32	m_extentMaxY
qint32	m_extentMinX
qint32	m_extentMinY
quint8 *	m_newDefaultPixel
quint8 *	m_oldDefaultPixel

Friends
class	KisMementoManager

Additional Inherited Members
Protected Member Functions inherited from KisShared
	KisShared ()
	~KisShared ()

Detailed Description

Definition at line 26 of file kis_memento.h.

Constructor & Destructor Documentation

KisMemento()

KisMemento::KisMemento ( KisMementoManager * )

inline

Definition at line 29 of file kis_memento.h.

                                            {
        m_extentMinX = qint32_MAX;
        m_extentMinY = qint32_MAX;
        m_extentMaxX = qint32_MIN;
        m_extentMaxY = qint32_MIN;
 
        m_oldDefaultPixel = 0;
        m_newDefaultPixel = 0;
    }

References m_extentMaxX, m_extentMaxY, m_extentMinX, m_extentMinY, m_newDefaultPixel, m_oldDefaultPixel, qint32_MAX, and qint32_MIN.

~KisMemento()

KisMemento::~KisMemento ( )

inline

Definition at line 39 of file kis_memento.h.

                         {
        delete[] m_oldDefaultPixel;
        delete[] m_newDefaultPixel;
    }

References m_newDefaultPixel, and m_oldDefaultPixel.

Member Function Documentation

extent() [1/2]

QRect KisMemento::extent ( )

inline

Definition at line 61 of file kis_memento.h.

                          {
        qint32 x, y, w, h;
        extent(x, y, w, h);
        return QRect(x, y, w, h);
    }

References extent().

extent() [2/2]

void KisMemento::extent ( qint32 & x, qint32 & y, qint32 & w, qint32 & h )

inline

Definition at line 44 of file kis_memento.h.

                                                                   {
        const bool extentIsValid =
            m_extentMaxX >= m_extentMinX && m_extentMaxY >= m_extentMinY;
 
        if (extentIsValid) {
            x = m_extentMinX;
            y = m_extentMinY;
            w = m_extentMaxX - m_extentMinX + 1;
            h = m_extentMaxY - m_extentMinY + 1;
        } else {
            x = 0;
            y = 0;
            w = 0;
            h = 0;
        }
    }

References m_extentMaxX, m_extentMaxY, m_extentMinX, and m_extentMinY.

newDefaultPixel()

const quint8 * KisMemento::newDefaultPixel ( ) const

inline

Definition at line 81 of file kis_memento.h.

                                          {
        return m_newDefaultPixel;
    }

References m_newDefaultPixel.

oldDefaultPixel()

const quint8 * KisMemento::oldDefaultPixel ( ) const

inline

Definition at line 77 of file kis_memento.h.

                                          {
        return m_oldDefaultPixel;
    }

References m_oldDefaultPixel.

saveNewDefaultPixel()

void KisMemento::saveNewDefaultPixel ( const quint8 * pixel, quint32 pixelSize )

inline

Definition at line 72 of file kis_memento.h.

                                                                     {
        m_newDefaultPixel = new quint8[pixelSize];
        memcpy(m_newDefaultPixel, pixel, pixelSize);
    }

References m_newDefaultPixel.

saveOldDefaultPixel()

void KisMemento::saveOldDefaultPixel ( const quint8 * pixel, quint32 pixelSize )

inline

Definition at line 67 of file kis_memento.h.

                                                                     {
        m_oldDefaultPixel = new quint8[pixelSize];
        memcpy(m_oldDefaultPixel, pixel, pixelSize);
    }

References m_oldDefaultPixel.

updateExtent()

void KisMemento::updateExtent ( qint32 col, qint32 row, QMutex * currentMementoExtentLock )

inlineprivate

HACK ALERT: the lock is stored in the memento manager to avoid too many locks to be created. Anyway, a memento manager can have only one "current memento". And it would not be nice to do KisTileData::WIDTH/HEIGHT multiplication under the lock held.

Definition at line 88 of file kis_memento.h.

                                                                                       {
        const qint32 tileMinX = col * KisTileData::WIDTH;
        const qint32 tileMinY = row * KisTileData::HEIGHT;
        const qint32 tileMaxX = tileMinX + KisTileData::WIDTH - 1;
        const qint32 tileMaxY = tileMinY + KisTileData::HEIGHT - 1;
 
        {
            QMutexLocker l(currentMementoExtentLock);
            m_extentMinX = qMin(m_extentMinX, tileMinX);
            m_extentMaxX = qMax(m_extentMaxX, tileMaxX);
            m_extentMinY = qMin(m_extentMinY, tileMinY);
            m_extentMaxY = qMax(m_extentMaxY, tileMaxY);
        }
    }

References KisTileData::HEIGHT, m_extentMaxX, m_extentMaxY, m_extentMinX, m_extentMinY, and KisTileData::WIDTH.

Friends And Related Symbol Documentation

KisMementoManager

friend class KisMementoManager

friend

Definition at line 86 of file kis_memento.h.

Member Data Documentation

m_extentMaxX

qint32 KisMemento::m_extentMaxX

private

Definition at line 116 of file kis_memento.h.

m_extentMaxY

qint32 KisMemento::m_extentMaxY

private

Definition at line 118 of file kis_memento.h.

m_extentMinX

qint32 KisMemento::m_extentMinX

private

Definition at line 115 of file kis_memento.h.

m_extentMinY

qint32 KisMemento::m_extentMinY

private

Definition at line 117 of file kis_memento.h.

m_newDefaultPixel

quint8* KisMemento::m_newDefaultPixel

private

Definition at line 113 of file kis_memento.h.

m_oldDefaultPixel

quint8* KisMemento::m_oldDefaultPixel

private

Definition at line 112 of file kis_memento.h.

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

• libs/image/tiles3/kis_memento.h