InlineAutomation.h

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/*
 * InlineAutomation.h - class for automating something "inline"
 *
 * Copyright (c) 2008-2010 Tobias Doerffel <tobydox/at/users.sourceforge.net>
 *
 * This file is part of LMMS - https://lmms.io
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program (see COPYING); if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301 USA.
 *
 */
 
#ifndef LMMS_INLINE_AUTOMATION_H
#define LMMS_INLINE_AUTOMATION_H
 
#include "AutomationNode.h"
#include "AutomationClip.h"
 
namespace lmms
{
 
class InlineAutomation : public FloatModel
{
public:
        InlineAutomation() :
                FloatModel()
        {
        }
 
        InlineAutomation(const InlineAutomation& _copy) :
                FloatModel(_copy.value(), _copy.minValue(), _copy.maxValue(), _copy.step<float>()),
                m_autoClip(_copy.m_autoClip->clone())
        {
                m_autoClip->clearObjects();
                m_autoClip->addObject(this);
        }
 
        ~InlineAutomation() override
        {
        }
 
        virtual float defaultValue() const = 0;
 
        bool hasAutomation() const
        {
                if( m_autoClip != nullptr && m_autoClip->getTimeMap().isEmpty() == false )
                {
                        // Prevent saving inline automation if there's just one node at the beginning of
                        // the clip, which has a InValue equal to the value of model (which is going
                        // to be saved anyways) and no offset between the InValue and OutValue
                        AutomationClip::timeMap::const_iterator firstNode =
                                m_autoClip->getTimeMap().begin();
 
                        if (isAtInitValue()
                                && m_autoClip->getTimeMap().size() == 1
                                && POS(firstNode) == 0
                                && INVAL(firstNode) == value()
                                && OFFSET(firstNode) == 0)
                        {
                                return false;
                        }
 
                        return true;
                }
 
                return false;
        }
 
        AutomationClip * automationClip()
        {
                if( m_autoClip == nullptr )
                {
                        m_autoClip = std::make_unique<AutomationClip>(nullptr);
                        m_autoClip->addObject( this );
                }
                return m_autoClip.get();
        }
 
        void saveSettings( QDomDocument & _doc, QDomElement & _parent ) override;
        void loadSettings( const QDomElement & _this ) override;
 
 
private:
        std::unique_ptr<AutomationClip> m_autoClip;
 
} ;
 
 
} // namespace lmms
 
#endif // LMMS_INLINE_AUTOMATION_H