KisLayerThumbnailCache Class Reference

#include <KisLayerThumbnailCache.h>

Inheritance diagram for KisLayerThumbnailCache:

Classes
struct	Private

Signals
void	sigLayerThumbnailUpdated (KisNodeSP node)

Public Member Functions
void	clear ()
	KisLayerThumbnailCache ()
int	maxSize () const
void	notifyNodeAdded (KisNodeSP node)
void	notifyNodeRemoved (KisNodeSP node)
void	setIdleTaskManager (KisIdleTasksManager *manager)
void	setImage (KisImageSP image)
void	setImage (KisImageSP image, KisIdleTasksManager *manager)
void	setMaxSize (int maxSize)
void	startThumbnailsUpdate ()
QImage	thumbnail (KisNodeSP node) const
	~KisLayerThumbnailCache ()

Private Slots
void	slotThumbnailGenerated (KisNodeSP node, int seqNo, int maxSize, const QImage &thumb)

Private Member Functions
void	setIdleTaskManagerImpl (KisIdleTasksManager *manager)

Private Attributes
QScopedPointer< Private >	m_d

Detailed Description

Definition at line 18 of file KisLayerThumbnailCache.h.

Constructor & Destructor Documentation

KisLayerThumbnailCache()

KisLayerThumbnailCache::KisLayerThumbnailCache

(

)

Definition at line 102 of file KisLayerThumbnailCache.cpp.

    : m_d(new Private())
{
}

~KisLayerThumbnailCache()

KisLayerThumbnailCache::~KisLayerThumbnailCache ( )

default

Member Function Documentation

clear()

void KisLayerThumbnailCache::clear

(

)

Definition at line 206 of file KisLayerThumbnailCache.cpp.

{
    m_d->cache.clear();
}

References m_d.

maxSize()

int KisLayerThumbnailCache::maxSize

(

)

const

Definition at line 155 of file KisLayerThumbnailCache.cpp.

{
    return m_d->maxSize;
}

References m_d.

notifyNodeAdded()

void KisLayerThumbnailCache::notifyNodeAdded

(

KisNodeSP

node

)

Definition at line 196 of file KisLayerThumbnailCache.cpp.

{
    Q_UNUSED(node);
    m_d->cleanupDeletedNodes();
 
    if (m_d->image && m_d->taskGuard.isValid()) {
        m_d->taskGuard.trigger();
    }
}

References m_d.

notifyNodeRemoved()

void KisLayerThumbnailCache::notifyNodeRemoved

(

KisNodeSP

node

)

Definition at line 190 of file KisLayerThumbnailCache.cpp.

{
    Q_UNUSED(node);
    m_d->cleanupDeletedNodes();
}

References m_d.

setIdleTaskManager()

void KisLayerThumbnailCache::setIdleTaskManager

(

KisIdleTasksManager *

manager

)

Definition at line 132 of file KisLayerThumbnailCache.cpp.

{
    setIdleTaskManagerImpl(manager);
    if (m_d->image && m_d->taskGuard.isValid()) {
        m_d->taskGuard.trigger();
    }
}

References m_d, and setIdleTaskManagerImpl().

setIdleTaskManagerImpl()

void KisLayerThumbnailCache::setIdleTaskManagerImpl ( KisIdleTasksManager * manager )

private

Definition at line 109 of file KisLayerThumbnailCache.cpp.

{
    if (manager) {
        m_d->taskGuard = manager->addIdleTaskWithGuard([this] (KisImageSP image) {
            ThumbnailsStroke *stroke = new ThumbnailsStroke(image, m_d->maxSize, m_d->cache);
            connect(stroke, SIGNAL(sigThumbnailGenerated(KisNodeSP, int, int, QImage)), this, SLOT(slotThumbnailGenerated(KisNodeSP, int, int, QImage)));
            return stroke;
        });
    } else {
        m_d->taskGuard = KisIdleTasksManager::TaskGuard();
    }
}

References KisIdleTasksManager::addIdleTaskWithGuard(), connect(), m_d, and slotThumbnailGenerated().

setImage() [1/2]

void KisLayerThumbnailCache::setImage

(

KisImageSP

image

)

Definition at line 122 of file KisLayerThumbnailCache.cpp.

{
    m_d->image = image;
    m_d->cache.clear();
 
    if (m_d->image && m_d->taskGuard.isValid()) {
        m_d->taskGuard.trigger();
    }
}

References m_d.

setImage() [2/2]

void KisLayerThumbnailCache::setImage	(	KisImageSP	image,
		KisIdleTasksManager *	manager )

Definition at line 140 of file KisLayerThumbnailCache.cpp.

{
    setIdleTaskManagerImpl(manager);
    setImage(image);
    // the update is triggered only by the second call, not the first one!
}

References setIdleTaskManagerImpl(), and setImage().

setMaxSize()

void KisLayerThumbnailCache::setMaxSize

(

int

maxSize

)

Definition at line 147 of file KisLayerThumbnailCache.cpp.

{
    m_d->maxSize = maxSize;
    if (m_d->image && m_d->taskGuard.isValid()) {
        m_d->taskGuard.trigger();
    }
}

References m_d, and maxSize().

sigLayerThumbnailUpdated

void KisLayerThumbnailCache::sigLayerThumbnailUpdated ( KisNodeSP node )

signal

slotThumbnailGenerated

void KisLayerThumbnailCache::slotThumbnailGenerated ( KisNodeSP node, int seqNo, int maxSize, const QImage & thumb )

privateslot

Definition at line 211 of file KisLayerThumbnailCache.cpp.

{
    if (node->image() != m_d->image) {
        qWarning() << "KisLayerThumbnailCache::slotThumbnailGenerated: node does not belong to the attached image anymore!" << ppVar(node) << ppVar(m_d->image);
        return;
    }
 
    m_d->cache[node] = {thumb, seqNo, maxSize};
    Q_EMIT sigLayerThumbnailUpdated(node);
}

References KisBaseNode::image, m_d, maxSize(), ppVar, and sigLayerThumbnailUpdated().

startThumbnailsUpdate()

void KisLayerThumbnailCache::startThumbnailsUpdate

(

)

thumbnail()

QImage KisLayerThumbnailCache::thumbnail

(

KisNodeSP

node

)

const

Definition at line 160 of file KisLayerThumbnailCache.cpp.

{
    QImage image;
 
    auto it = m_d->cache.find(node);
    if (it != m_d->cache.end()) {
        image = it->image;
 
        if (it->maxSize > m_d->maxSize) {
            image = image.scaled(m_d->maxSize, m_d->maxSize, Qt::KeepAspectRatio);
        }
    } else {
        image = QImage(1, 1, QImage::Format_ARGB32);
        image.fill(0);
    }
 
    return image;
}

References m_d.

Member Data Documentation

m_d

QScopedPointer<Private> KisLayerThumbnailCache::m_d

private

Definition at line 50 of file KisLayerThumbnailCache.h.

---

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

• libs/ui/KisLayerThumbnailCache.h
• libs/ui/KisLayerThumbnailCache.cpp