Kwave::UndoInsertAction Class Reference

#include <UndoInsertAction.h>

Inheritance diagram for Kwave::UndoInsertAction:

Collaboration diagram for Kwave::UndoInsertAction:

Public Slots
void	setLength (sample_index_t length)

Public Member Functions
	UndoInsertAction (QWidget *parent_widget, const QList< unsigned int > &track_list, sample_index_t offset, sample_index_t length)
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 void	dump (const QString &indent) Q_DECL_OVERRIDE
Public Member Functions inherited from Kwave::UndoAction
virtual	~UndoAction ()
virtual bool	containsModification () const

Protected Attributes
QWidget *	m_parent_widget
QList< unsigned int >	m_track_list
sample_index_t	m_offset
sample_index_t	m_length

Detailed Description

Definition at line 37 of file UndoInsertAction.h.

Constructor & Destructor Documentation

UndoInsertAction()

Kwave::UndoInsertAction::UndoInsertAction	(	QWidget *	parent_widget,
		const QList< unsigned int > &	track_list,
		sample_index_t	offset,
		sample_index_t	length
	)

Constructor.

Parameters

parent_widget	the widget used as parent for displaying error messages
track_list	list of affected tracks
offset	index of the first inserted sample
length	number of inserted samples

Definition at line 30 of file UndoInsertAction.cpp.

    :QObject(), UndoAction(),
     m_parent_widget(parent_widget),
     m_track_list(track_list),
     m_offset(offset), m_length(length)
{
}

Member Function Documentation

description()

QString Kwave::UndoInsertAction::description ( )

virtual

See also

UndoAction::description()

Implements Kwave::UndoAction.

Definition at line 42 of file UndoInsertAction.cpp.

{
    return i18n("Insert");
}

dump()

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

virtual

dump, for debugging purposes

Reimplemented from Kwave::UndoAction.

Definition at line 95 of file UndoInsertAction.cpp.

References DBG, m_length, and m_offset.

{
    qDebug("%sundo insert 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));
}

redoSize()

qint64 Kwave::UndoInsertAction::redoSize ( )

virtual

See also

UndoAction::redoSize()

Implements Kwave::UndoAction.

Definition at line 54 of file UndoInsertAction.cpp.

References m_length, and m_track_list.

{
    return sizeof(UndoDeleteAction) +
            (m_length * sizeof(sample_t) * m_track_list.count());
}

setLength

void Kwave::UndoInsertAction::setLength ( sample_index_t  length )

slot

Can be connected to a Writer's sigSamplesWritten signal if the writer has been opened in insert or append mode. In these cases the undo action's length only is determined when the writer gets closed.

See also

Kwave::Writer::sigSamplesWritten

Definition at line 89 of file UndoInsertAction.cpp.

References m_length.

{
    m_length = length;
}

store()

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

virtual

See also

UndoAction::store()

Implements Kwave::UndoAction.

Definition at line 61 of file UndoInsertAction.cpp.

{
    // we delete -> nothing to store
    return true;
}

undo()

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

virtual

Removes samples from the track.

See also

UndoAction::undo()

Implements Kwave::UndoAction.

Definition at line 68 of file UndoInsertAction.cpp.

References Kwave::SignalManager::deleteRange(), m_length, m_offset, m_parent_widget, m_track_list, and Kwave::UndoAction::store().

{
    Kwave::UndoAction *redo_action = Q_NULLPTR;

    // store data for redo
    if (with_redo) {
        redo_action = new(std::nothrow) Kwave::UndoDeleteAction(
            m_parent_widget, m_track_list, m_offset, m_length);
        Q_ASSERT(redo_action);
        if (!redo_action) return Q_NULLPTR;
        redo_action->store(manager);
    }

    // now delete the samples
    manager.deleteRange(m_offset, m_length, m_track_list);

    return redo_action;
}

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undoSize()

qint64 Kwave::UndoInsertAction::undoSize ( )

virtual

See also

UndoAction::undoSize()

Implements Kwave::UndoAction.

Definition at line 48 of file UndoInsertAction.cpp.

{
    return sizeof(*this);
}

Member Data Documentation

m_length

sample_index_t Kwave::UndoInsertAction::m_length

protected

number of samples

Definition at line 102 of file UndoInsertAction.h.

Referenced by dump(), redoSize(), setLength(), and undo().

m_offset

sample_index_t Kwave::UndoInsertAction::m_offset

protected

first sample

Definition at line 99 of file UndoInsertAction.h.

Referenced by dump(), and undo().

m_parent_widget

QWidget* Kwave::UndoInsertAction::m_parent_widget

protected

parent widget for showing error messages

Definition at line 93 of file UndoInsertAction.h.

Referenced by undo().

m_track_list

QList<unsigned int> Kwave::UndoInsertAction::m_track_list

protected

list of affected tracks

Definition at line 96 of file UndoInsertAction.h.

Referenced by redoSize(), and undo().

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

• libkwave/undo/UndoInsertAction.h
• libkwave/undo/UndoInsertAction.cpp