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NotationElement.cpp

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */

/*
    Rosegarden
    A MIDI and audio sequencer and musical notation editor.
    Copyright 2000-2010 the Rosegarden development team.
 
    Other copyrights also apply to some parts of this work.  Please
    see the AUTHORS file and individual file headers for details.
 
    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.  See the file
    COPYING included with this distribution for more information.
*/


#include <QGraphicsItem>
#include "NotationElement.h"
#include "misc/Debug.h"

#include "base/BaseProperties.h"
#include "base/Event.h"
#include "base/Exception.h"
#include "base/NotationTypes.h"
#include "base/ViewElement.h"
#include "base/Profiler.h"

namespace Rosegarden
{

static const int NotationElementData = 1;

NotationElement::NotationElement(Event *event) :
    ViewElement(event),
    m_recentlyRegenerated(false),
    m_isColliding(false),
    m_item(0),
    m_extraItems(0)
{
    //     NOTATION_DEBUG << "new NotationElement "
    //                          << this << " wrapping " << event << endl;
}

NotationElement::~NotationElement()
{
    removeItem();
}

timeT
NotationElement::getViewAbsoluteTime() const
{
    return event()->getNotationAbsoluteTime();
}

timeT
NotationElement::getViewDuration() const
{
    return event()->getNotationDuration();
}

double
00064 NotationElement::getSceneX()
{
    if (m_item)
        return m_item->x();
    else {
        std::cerr << "ERROR: No scene item for this notation element:";
        event()->dump(std::cerr);
        throw NoGraphicsItem("No scene item for notation element of type " +
                             event()->getType(), __FILE__, __LINE__);
    }
}

double
00077 NotationElement::getSceneY()
{
    if (m_item)
        return m_item->y();
    else {
        std::cerr << "ERROR: No scene item for this notation element:";
        event()->dump(std::cerr);
        throw NoGraphicsItem("No scene item for notation element of type " +
                             event()->getType(), __FILE__, __LINE__);
    }
}

bool
00090 NotationElement::isRest() const
{
    return event()->isa(Note::EventRestType);
}

bool
00096 NotationElement::isNote() const
{
    return event()->isa(Note::EventType);
}

bool
00102 NotationElement::isTuplet() const
{
    return event()->has(BaseProperties::BEAMED_GROUP_TUPLET_BASE);
}

bool
00108 NotationElement::isGrace() const
{
    return event()->has(BaseProperties::IS_GRACE_NOTE) &&
           event()->get
           <Bool>(BaseProperties::IS_GRACE_NOTE);
}

void
00116 NotationElement::setItem(QGraphicsItem *e, double sceneX, double sceneY)
{
    Profiler p("NotationElement::setItem");
    removeItem();
    e->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
    e->setData(NotationElementData, QVariant::fromValue((void *)this));
    e->setPos(sceneX, sceneY);
    m_recentlyRegenerated = true;
    m_item = e;
}

void
00128 NotationElement::addItem(QGraphicsItem *e, double sceneX, double sceneY)
{
    Profiler p("NotationElement::addItem");

    if (!m_item) {
        std::cerr << "ERROR: Attempt to add extra scene item to element without main scene item:";
        event()->dump(std::cerr);
        throw NoGraphicsItem("No scene item for notation element of type " +
                             event()->getType(), __FILE__, __LINE__);
    }
    if (!m_extraItems) {
        m_extraItems = new ItemList;
    }
    e->setData(NotationElementData, QVariant::fromValue((void *)this));
    e->setPos(sceneX, sceneY);
    m_extraItems->push_back(e);
}

void
00147 NotationElement::removeItem()
{
    Profiler p("NotationElement::removeItem");

    m_recentlyRegenerated = false;

//    NOTATION_DEBUG << "NotationElement::removeItem" << endl;

    delete m_item;
    m_item = 0;

    if (m_extraItems) {

        for (ItemList::iterator i = m_extraItems->begin();
             i != m_extraItems->end(); ++i) delete *i;
        m_extraItems->clear();

        delete m_extraItems;
        m_extraItems = 0;
    }
}

void
00170 NotationElement::reposition(double sceneX, double sceneY)
{
    Profiler p("NotationElement::reposition");

    if (!m_item) return;
    if (sceneX == m_item->x() && sceneY == m_item->y()) return;

    m_recentlyRegenerated = false;

    double dx = sceneX - m_item->x();
    double dy = sceneY - m_item->y();
    m_item->setPos(sceneX, sceneY);

    if (m_extraItems) {
        for (ItemList::iterator i = m_extraItems->begin();
             i != m_extraItems->end(); ++i) {
            (*i)->moveBy(dx, dy);
        }
    }
}

bool
NotationElement::isSelected()
{
    return m_item ? m_item->isSelected() : false;
}

void
NotationElement::setSelected(bool selected)
{
    m_recentlyRegenerated = false;
    if (m_item) m_item->setSelected(selected);
}

NotationElement *
NotationElement::getNotationElement(QGraphicsItem *item)
{
    QVariant v = item->data(NotationElementData);
    if (v.isNull()) return 0;
    return (NotationElement *)v.value<void *>();
}

}

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