File indexing completed on 2024-12-22 04:13:03

 /*
  *  SPDX-FileCopyrightText: 2018 Dmitry Kazakov <dimula73@gmail.com>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "KisToolChangesTracker.h"
 
 #include "kis_global.h"
 #include <QSharedPointer>
 
 struct KisToolChangesTracker::Private {
     QList<KisToolChangesTrackerDataSP> undoStack;
     QList<KisToolChangesTrackerDataSP> redoStack;
 };
 
 
 KisToolChangesTracker::KisToolChangesTracker()
     : m_d(new Private)
 {
 }
 
 KisToolChangesTracker::~KisToolChangesTracker()
 {
 }
 
 void KisToolChangesTracker::commitConfig(KisToolChangesTrackerDataSP state)
 {
     m_d->undoStack.append(state);
     m_d->redoStack.clear();
 }
 
 void KisToolChangesTracker::requestUndo()
 {
     if (m_d->undoStack.isEmpty()) return;
 
     m_d->redoStack.append(m_d->undoStack.last());
     m_d->undoStack.removeLast();
     if (!m_d->undoStack.isEmpty()) {
         emit sigConfigChanged(m_d->undoStack.last());
     }
 }
 
 void KisToolChangesTracker::requestRedo()
 {
     if (m_d->redoStack.isEmpty()) return;
 
     m_d->undoStack.append(m_d->redoStack.last());
     m_d->redoStack.removeLast();
     if (!m_d->undoStack.isEmpty()) {
         emit sigConfigChanged(m_d->undoStack.last());
     }
 }
 
 KisToolChangesTrackerDataSP KisToolChangesTracker::lastState() const
 {
     return !m_d->undoStack.isEmpty() ? m_d->undoStack.last() : static_cast<QSharedPointer<KisToolChangesTrackerData>>(0);
 }
 
 void KisToolChangesTracker::reset()
 {
     m_d->undoStack.clear();
     m_d->redoStack.clear();
 }
 
 bool KisToolChangesTracker::isEmpty() const
 {
     return m_d->undoStack.isEmpty() && m_d->redoStack.isEmpty();
 }
 
 bool KisToolChangesTracker::canUndo() const
 {
     return m_d->undoStack.size() > 1;
 }
 
 bool KisToolChangesTracker::canRedo() const
 {
     return !m_d->redoStack.isEmpty();
 }