Kwave::UndoSelection Class Reference

#include <UndoSelection.h>

Inheritance diagram for Kwave::UndoSelection:

Collaboration diagram for Kwave::UndoSelection:

Public Member Functions
	UndoSelection (Kwave::SignalManager &manager)
	UndoSelection (Kwave::SignalManager &manager, QList< unsigned int > selected_tracks, sample_index_t offset, sample_index_t length)
virtual	~UndoSelection () Q_DECL_OVERRIDE
virtual QString	description () Q_DECL_OVERRIDE
virtual qint64	undoSize () Q_DECL_OVERRIDE
virtual qint64	redoSize () Q_DECL_OVERRIDE
virtual bool	store (Kwave::SignalManager &manager) Q_DECL_OVERRIDE
virtual Kwave::UndoAction *	undo (Kwave::SignalManager &manager, bool with_redo) Q_DECL_OVERRIDE
virtual bool	containsModification () const Q_DECL_OVERRIDE
virtual void	dump (const QString &indent) Q_DECL_OVERRIDE
Public Member Functions inherited from Kwave::UndoAction
virtual	~UndoAction ()

Private Attributes
Kwave::SignalManager &	m_manager
sample_index_t	m_offset
sample_index_t	m_length
QList< unsigned int >	m_selected_tracks

Detailed Description

This Undo action simply stores the combination of the currently selected tracks and the currently selected range of samples.

Definition at line 37 of file UndoSelection.h.

Constructor & Destructor Documentation

UndoSelection() [1/2]

Kwave::UndoSelection::UndoSelection ( Kwave::SignalManager &  manager )

explicit

Constructor.

Parameters

manager

reference to the SignalManager

Definition at line 26 of file UndoSelection.cpp.

    :UndoAction(),
     m_manager(manager), m_offset(0), m_length(0), m_selected_tracks()
{
}

UndoSelection() [2/2]

Kwave::UndoSelection::UndoSelection	(	Kwave::SignalManager &	manager,
		QList< unsigned int >	selected_tracks,
		sample_index_t	offset,
		sample_index_t	length
	)

Constructor.

Parameters

manager	reference to the SignalManager
selected_tracks	list of selected tracks
offset	start of the selection
length	number of selected samples

Definition at line 33 of file UndoSelection.cpp.

    :UndoAction(),
     m_manager(manager), m_offset(offset), m_length(length),
     m_selected_tracks(selected_tracks)
{
}

~UndoSelection()

Kwave::UndoSelection::~UndoSelection ( )

virtual

virtual destructor

Definition at line 44 of file UndoSelection.cpp.

{
}

Member Function Documentation

containsModification()

virtual bool Kwave::UndoSelection::containsModification ( ) const

inlinevirtual

See also

UndoAction::containsModification()

Reimplemented from Kwave::UndoAction.

Definition at line 80 of file UndoSelection.h.

References dump().

                                                                  {
            return false;
        }

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description()

QString Kwave::UndoSelection::description ( )

virtual

See also

UndoAction::description()

Implements Kwave::UndoAction.

Definition at line 49 of file UndoSelection.cpp.

{
    return i18n("Selection");
}

dump()

void Kwave::UndoSelection::dump ( const QString &  indent )

virtual

dump, for debugging purposes

Reimplemented from Kwave::UndoAction.

Definition at line 103 of file UndoSelection.cpp.

References DBG, m_length, and m_offset.

Referenced by containsModification().

{
    qDebug("%sselect from [%lu ... %lu] (%lu)", DBG(indent),
           static_cast<unsigned long int>(m_offset),
           static_cast<unsigned long int>(m_offset + ((m_length) ?
               (m_length - 1) : m_length)),
           static_cast<unsigned long int>(m_length));
}

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redoSize()

qint64 Kwave::UndoSelection::redoSize ( )

virtual

See also

UndoAction::redoSize()

Implements Kwave::UndoAction.

Definition at line 62 of file UndoSelection.cpp.

References m_manager, and Kwave::SignalManager::selectedTracks().

{
    return sizeof(*this) +
        (m_manager.selectedTracks().count() * sizeof(unsigned int));
}

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store()

bool Kwave::UndoSelection::store ( Kwave::SignalManager &  manager )

virtual

See also

UndoAction::store()

Implements Kwave::UndoAction.

Definition at line 69 of file UndoSelection.cpp.

References Kwave::Selection::length(), m_length, m_offset, m_selected_tracks, Kwave::Selection::offset(), Kwave::SignalManager::selectedTracks(), and Kwave::SignalManager::selection().

{
    m_offset = manager.selection().offset();
    m_length = manager.selection().length();
    m_selected_tracks = manager.selectedTracks();

    return true;
}

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undo()

Kwave::UndoAction * Kwave::UndoSelection::undo ( Kwave::SignalManager &  manager, bool  with_redo  )

virtual

See also

UndoAction::undo()

Implements Kwave::UndoAction.

Definition at line 79 of file UndoSelection.cpp.

References Kwave::Selection::length(), m_length, m_offset, m_selected_tracks, Kwave::Selection::offset(), Kwave::SignalManager::selectedTracks(), Kwave::SignalManager::selection(), Kwave::SignalManager::selectRange(), and Kwave::SignalManager::selectTracks().

{
    // store current selection for later redo
    sample_index_t old_offset = manager.selection().offset();
    sample_index_t old_length = manager.selection().length();
    QList<unsigned int> old_selected_tracks = manager.selectedTracks();

    // restore the previous selection
    manager.selectRange(m_offset, m_length);
    manager.selectTracks(m_selected_tracks);

    // store data for redo
    if (with_redo) {
        m_offset = old_offset;
        m_length = old_length;
        m_selected_tracks = old_selected_tracks;
        return this;
    } else {
        return Q_NULLPTR;
    }
}

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undoSize()

qint64 Kwave::UndoSelection::undoSize ( )

virtual

See also

UndoAction::undoSize()

Implements Kwave::UndoAction.

Definition at line 55 of file UndoSelection.cpp.

References m_selected_tracks.

{
    return sizeof(*this) +
        (m_selected_tracks.count() * sizeof(unsigned int));
}

Member Data Documentation

m_length

sample_index_t Kwave::UndoSelection::m_length

private

Number of selected samples

Definition at line 96 of file UndoSelection.h.

Referenced by dump(), store(), and undo().

m_manager

Kwave::SignalManager& Kwave::UndoSelection::m_manager

private

reference to the SignalManager is needed in redoSize()

Definition at line 90 of file UndoSelection.h.

Referenced by redoSize().

m_offset

sample_index_t Kwave::UndoSelection::m_offset

private

First selected sample

Definition at line 93 of file UndoSelection.h.

Referenced by dump(), store(), and undo().

m_selected_tracks

QList<unsigned int> Kwave::UndoSelection::m_selected_tracks

private

Array with indices of selected tracks.

Definition at line 99 of file UndoSelection.h.

Referenced by store(), undo(), and undoSize().

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

• libkwave/undo/UndoSelection.h
• libkwave/undo/UndoSelection.cpp