KisUndoModel Class Reference

#include <KisUndoModel.h>

Inheritance diagram for KisUndoModel:

Public Slots
void	addImage (int idx)
void	setStack (KUndo2QStack *stack)

Public Member Functions
bool	checkMergedCommand (int index)
QIcon	cleanIcon () const
int	columnCount (const QModelIndex &parent=QModelIndex()) const override
QVariant	data (const QModelIndex &index, int role=Qt::DisplayRole) const override
QString	emptyLabel () const
QModelIndex	index (int row, int column, const QModelIndex &parent=QModelIndex()) const override
	KisUndoModel (QObject *parent=0)
QModelIndex	parent (const QModelIndex &child) const override
int	rowCount (const QModelIndex &parent=QModelIndex()) const override
QModelIndex	selectedIndex () const
QItemSelectionModel *	selectionModel () const
void	setCanvas (KisCanvas2 *canvas)
void	setCleanIcon (const QIcon &icon)
void	setDevicePixelRatio (qreal devicePixelRatio)
void	setEmptyLabel (const QString &label)
KUndo2QStack *	stack () const

Private Slots
void	setStackCurrentIndex (const QModelIndex &index)
void	stackChanged ()
void	stackDestroyed (QObject *obj)

Private Attributes
bool	m_blockOutgoingHistoryChange {false}
QPointer< KisCanvas2 >	m_canvas
QIcon	m_clean_icon
qreal	m_devicePixelRatioF {1.0}
QString	m_empty_label
QMap< const KUndo2Command *, QImage >	m_imageMap
QItemSelectionModel *	m_sel_model {0}
KUndo2QStack *	m_stack {0}

Detailed Description

Definition at line 56 of file KisUndoModel.h.

Constructor & Destructor Documentation

KisUndoModel()

KisUndoModel::KisUndoModel

(

QObject *

parent = 0

)

Definition at line 49 of file KisUndoModel.cpp.

    : QAbstractItemModel(parent)
{
    m_blockOutgoingHistoryChange = false;
    m_stack = 0;
    m_canvas = 0;
    m_sel_model = new QItemSelectionModel(this, this);
    connect(m_sel_model, SIGNAL(currentChanged(QModelIndex,QModelIndex)), this, SLOT(setStackCurrentIndex(QModelIndex)));
    m_empty_label = i18n("<empty>");
}

References connect(), m_blockOutgoingHistoryChange, m_canvas, m_empty_label, m_sel_model, m_stack, and setStackCurrentIndex().

Member Function Documentation

addImage

void KisUndoModel::addImage ( int idx )

slot

Definition at line 249 of file KisUndoModel.cpp.

{
 
    if (m_stack == 0 || m_stack->count() == 0) {
        return;
    }
 
    const KUndo2Command* currentCommand = m_stack->command(idx-1);
    if (m_stack->count() == idx && !m_imageMap.contains(currentCommand)) {
        KisImageWSP historyImage = m_canvas->image();
        KisPaintDeviceSP paintDevice = historyImage->projection();
        QSize size = QSize(32, 32)*m_devicePixelRatioF;
        QImage image = paintDevice->createThumbnail(size.width(), size.height(), 1,
                                                    KoColorConversionTransformation::internalRenderingIntent(),
                                                    KoColorConversionTransformation::internalConversionFlags());
        image.setDevicePixelRatio(m_devicePixelRatioF);
        m_imageMap[currentCommand] = image;
    }
 
    QList<const KUndo2Command*> list;
 
    for (int i = 0; i < m_stack->count(); ++i) {
        list << m_stack->command(i);
    }
 
    for (QMap<const KUndo2Command*, QImage>:: iterator it = m_imageMap.begin(); it != m_imageMap.end();) {
        if (!list.contains(it.key())) {
            it = m_imageMap.erase(it);
        }
        else {
            ++it;
        }
    }
}

References KUndo2QStack::command(), KUndo2QStack::count(), KisPaintDevice::createThumbnail(), KoColorConversionTransformation::internalConversionFlags(), KoColorConversionTransformation::internalRenderingIntent(), m_canvas, m_devicePixelRatioF, m_imageMap, m_stack, and KisImage::projection().

checkMergedCommand()

bool KisUndoModel::checkMergedCommand

(

int

index

)

Definition at line 283 of file KisUndoModel.cpp.

{
    Q_UNUSED(index);
    return false;
}

References index().

cleanIcon()

QIcon KisUndoModel::cleanIcon

(

)

const

Definition at line 239 of file KisUndoModel.cpp.

{
    return m_clean_icon;
}

References m_clean_icon.

columnCount()

int KisUndoModel::columnCount ( const QModelIndex & parent = QModelIndex() ) const

override

Definition at line 170 of file KisUndoModel.cpp.

{
    return 1;
}

data()

QVariant KisUndoModel::data ( const QModelIndex & index, int role = Qt::DisplayRole ) const

override

Definition at line 187 of file KisUndoModel.cpp.

{
    if (m_stack == 0){
        return QVariant();
    }
 
    if (index.column() != 0){
        return QVariant();
    }
 
    if (index.row() < 0 || index.row() > m_stack->count()){
        return QVariant();
    }
 
    if (role == Qt::DisplayRole) {
        if (index.row() == 0){
            return m_empty_label;
        }
        KUndo2Command* currentCommand = const_cast<KUndo2Command*>(m_stack->command(index.row() - 1));
 
        return currentCommand->isMerged() ?
            QString("%1 (Merged %2)").arg(currentCommand->text().toString()).arg(calcNumMergedCommands(currentCommand)) :
            currentCommand->text().toString();
    }
    else if (role == Qt::DecorationRole) {
        if (index.row() > 0) {
            const KUndo2Command* currentCommand = m_stack->command(index.row() - 1);
            if (m_imageMap.contains(currentCommand)) {
                return m_imageMap[currentCommand];
            }
        }
    }
    return QVariant();
}

References KUndo2QStack::command(), KUndo2QStack::count(), index(), KUndo2Command::isMerged(), m_empty_label, m_imageMap, m_stack, KUndo2Command::text(), and KUndo2MagicString::toString().

emptyLabel()

QString KisUndoModel::emptyLabel

(

)

const

Definition at line 222 of file KisUndoModel.cpp.

{
    return m_empty_label;
}

References m_empty_label.

index()

QModelIndex KisUndoModel::index ( int row, int column, const QModelIndex & parent = QModelIndex() ) const

override

Definition at line 137 of file KisUndoModel.cpp.

{
    if (m_stack == 0)
        return QModelIndex();
 
    if (parent.isValid())
        return QModelIndex();
 
    if (column != 0)
        return QModelIndex();
 
    if (row < 0 || row > m_stack->count())
        return QModelIndex();
 
    return createIndex(row, column);
}

References KUndo2QStack::count(), m_stack, and parent().

parent()

QModelIndex KisUndoModel::parent ( const QModelIndex & child ) const

override

Definition at line 154 of file KisUndoModel.cpp.

{
    return QModelIndex();
}

rowCount()

int KisUndoModel::rowCount ( const QModelIndex & parent = QModelIndex() ) const

override

Definition at line 159 of file KisUndoModel.cpp.

{
    if (m_stack == 0)
        return 0;
 
    if (parent.isValid())
        return 0;
 
    return m_stack->count() + 1;
}

References KUndo2QStack::count(), m_stack, and parent().

selectedIndex()

QModelIndex KisUndoModel::selectedIndex

(

)

const

Definition at line 132 of file KisUndoModel.cpp.

{
    return m_stack == 0 ? QModelIndex() : createIndex(m_stack->index(), 0);
}

References KUndo2QStack::index(), and m_stack.

selectionModel()

QItemSelectionModel * KisUndoModel::selectionModel

(

)

const

Definition at line 60 of file KisUndoModel.cpp.

{
    return m_sel_model;
}

References m_sel_model.

setCanvas()

void KisUndoModel::setCanvas

(

KisCanvas2 *

canvas

)

Definition at line 244 of file KisUndoModel.cpp.

{
    m_canvas = canvas;
}

References m_canvas.

setCleanIcon()

void KisUndoModel::setCleanIcon

(

const QIcon &

icon

)

Definition at line 233 of file KisUndoModel.cpp.

{
    m_clean_icon = icon;
    stackChanged();
}

References m_clean_icon, and stackChanged().

setDevicePixelRatio()

void KisUndoModel::setDevicePixelRatio

(

qreal

devicePixelRatio

)

Definition at line 289 of file KisUndoModel.cpp.

{
    m_devicePixelRatioF = devicePixelRatio;
}

References m_devicePixelRatioF.

setEmptyLabel()

void KisUndoModel::setEmptyLabel

(

const QString &

label

)

Definition at line 227 of file KisUndoModel.cpp.

{
    m_empty_label = label;
    stackChanged();
}

References m_empty_label, and stackChanged().

setStack

void KisUndoModel::setStack ( KUndo2QStack * stack )

slot

Definition at line 70 of file KisUndoModel.cpp.

{
    if (m_stack == stack)
        return;
 
    if (m_stack != 0) {
        disconnect(m_stack, SIGNAL(canRedoChanged(bool)), this, SLOT(stackChanged()));
        disconnect(m_stack, SIGNAL(cleanChanged(bool)), this, SLOT(stackChanged()));
        disconnect(m_stack, SIGNAL(indexChanged(int)), this, SLOT(stackChanged()));
        disconnect(m_stack, SIGNAL(destroyed(QObject*)), this, SLOT(stackDestroyed(QObject*)));
        disconnect(m_stack, SIGNAL(indexChanged(int)), this, SLOT(addImage(int)));
    }
 
    m_stack = stack;
 
    if (m_stack != 0) {
        connect(m_stack, SIGNAL(canRedoChanged(bool)), this, SLOT(stackChanged()));
        connect(m_stack, SIGNAL(cleanChanged(bool)), this, SLOT(stackChanged()));
        connect(m_stack, SIGNAL(indexChanged(int)), this, SLOT(stackChanged()));
        connect(m_stack, SIGNAL(destroyed(QObject*)), this, SLOT(stackDestroyed(QObject*)));
        connect(m_stack, SIGNAL(indexChanged(int)), this, SLOT(addImage(int)));
    }
 
    stackChanged();
}

References addImage(), connect(), m_stack, stack(), stackChanged(), and stackDestroyed().

setStackCurrentIndex

void KisUndoModel::setStackCurrentIndex ( const QModelIndex & index )

privateslot

Definition at line 115 of file KisUndoModel.cpp.

{
    if (m_blockOutgoingHistoryChange)
        return;
 
    if (m_stack == 0)
        return;
 
    if (index == selectedIndex())
        return;
 
    if (index.column() != 0)
        return;
 
    m_stack->setIndex(index.row());
}

References index(), m_blockOutgoingHistoryChange, m_stack, selectedIndex(), and KUndo2QStack::setIndex().

stack()

KUndo2QStack * KisUndoModel::stack

(

)

const

Definition at line 65 of file KisUndoModel.cpp.

{
    return m_stack;
}

References m_stack.

stackChanged

void KisUndoModel::stackChanged ( )

privateslot

Definition at line 105 of file KisUndoModel.cpp.

{
    beginResetModel();
    endResetModel();
 
    m_blockOutgoingHistoryChange = true;
    m_sel_model->setCurrentIndex(selectedIndex(), QItemSelectionModel::ClearAndSelect);
    m_blockOutgoingHistoryChange = false;
}

References m_blockOutgoingHistoryChange, m_sel_model, and selectedIndex().

stackDestroyed

void KisUndoModel::stackDestroyed ( QObject * obj )

privateslot

Definition at line 96 of file KisUndoModel.cpp.

{
    if (obj != m_stack)
        return;
    m_stack = 0;
 
    stackChanged();
}

References m_stack, and stackChanged().

Member Data Documentation

m_blockOutgoingHistoryChange

bool KisUndoModel::m_blockOutgoingHistoryChange {false}

private

Definition at line 101 of file KisUndoModel.h.

{false};

m_canvas

QPointer<KisCanvas2> KisUndoModel::m_canvas

private

Definition at line 106 of file KisUndoModel.h.

m_clean_icon

QIcon KisUndoModel::m_clean_icon

private

Definition at line 105 of file KisUndoModel.h.

m_devicePixelRatioF

qreal KisUndoModel::m_devicePixelRatioF {1.0}

private

Definition at line 108 of file KisUndoModel.h.

{1.0};

m_empty_label

QString KisUndoModel::m_empty_label

private

Definition at line 104 of file KisUndoModel.h.

m_imageMap

QMap<const KUndo2Command*, QImage> KisUndoModel::m_imageMap

private

Definition at line 107 of file KisUndoModel.h.

m_sel_model

QItemSelectionModel* KisUndoModel::m_sel_model {0}

private

Definition at line 103 of file KisUndoModel.h.

{0};

m_stack

KUndo2QStack* KisUndoModel::m_stack {0}

private

Definition at line 102 of file KisUndoModel.h.

{0};

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

• plugins/dockers/historydocker/KisUndoModel.h
• plugins/dockers/historydocker/KisUndoModel.cpp