qcanvassimplesprite.cpp

LINUX下的混音软件

// -*- c-basic-offset: 4 -*-

/*
    Rosegarden
    A sequencer and musical notation editor.
 
    This program is Copyright 2000-2007
        Guillaume Laurent   <[e-mail]>,
        Chris Cannam        <[e-mail]>,
        Richard Bown        <[e-mail]>
 
    The moral right of the authors to claim authorship of this work
    has been asserted.
 
    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 <vector>
#include "misc/Debug.h"

#include <qpainter.h>

#include "QCanvasSimpleSprite.h"

namespace Rosegarden {

QCanvasSimpleSprite::QCanvasSimpleSprite(QPixmap *pixmap, QCanvas *canvas)
        : QCanvasSprite(0, canvas),
        m_pixmapArray(0)
{
    m_pixmapArray = makePixmapArray(pixmap);
    setSequence(m_pixmapArray);
}

QCanvasSimpleSprite::QCanvasSimpleSprite(QCanvasPixmap *pixmap, QCanvas *canvas)
        : QCanvasSprite(0, canvas),
        m_pixmapArray(0)
{
    m_pixmapArray = makePixmapArray(pixmap);
    setSequence(m_pixmapArray);
}

QCanvasSimpleSprite::QCanvasSimpleSprite(const QString &pixmapfile,
        QCanvas *canvas)
        : QCanvasSprite(0, canvas),
        m_pixmapArray(0)
{
    m_pixmapArray = makePixmapArray(pixmapfile);
    setSequence(m_pixmapArray);
}

QCanvasSimpleSprite::QCanvasSimpleSprite(QCanvas *canvas)
        : QCanvasSprite(0, canvas),
        m_pixmapArray(0)
{
    QCanvasPixmapArray* tmpArray = makePixmapArray(new QPixmap());
    setSequence(tmpArray);
}


QCanvasSimpleSprite::~QCanvasSimpleSprite()
{
    PixmapArrayGC::registerForDeletion(m_pixmapArray);
    m_pixmapArray = 0;

    // We can't delete m_pixmapArray or we get a core dump.
    //
    // The reason I think is that after the QCanvasSprite is deleted,
    // it is removed from the QCanvas, which therefore needs the
    // pixmaps to know how to update itself (the crash is in
    // QCanvas::removeChunks(), usually).
    //
    // So instead we have to do this GCish
    // thingy. PixmapArrayGC::deleteAll() is called by
    // NotationView::redoLayout
}

QCanvasPixmapArray*
QCanvasSimpleSprite::makePixmapArray(QPixmap *pixmap)
{
    QList<QPixmap> pixlist;
    pixlist.setAutoDelete(true); // the QCanvasPixmapArray creates its
    // own copies of the pixmaps, so we
    // can delete the one we're passed
    pixlist.append(pixmap);

    QList<QPoint> spotlist;
    spotlist.setAutoDelete(true);
    spotlist.append(new QPoint(0, 0));

    return new QCanvasPixmapArray(pixlist, spotlist);
}

QCanvasPixmapArray*
QCanvasSimpleSprite::makePixmapArray(QCanvasPixmap *pixmap)
{
    QList<QPixmap> pixlist;
    pixlist.setAutoDelete(true); // the QCanvasPixmapArray creates its
    // own copies of the pixmaps, so we
    // can delete the one we're passed
    pixlist.append(pixmap);

    QList<QPoint> spotlist;
    spotlist.setAutoDelete(true);
    spotlist.append(new QPoint(pixmap->offsetX(), pixmap->offsetY()));

    return new QCanvasPixmapArray(pixlist, spotlist);
}

QCanvasPixmapArray*
QCanvasSimpleSprite::makePixmapArray(const QString &pixmapfile)
{
    return new QCanvasPixmapArray(pixmapfile);
}

//////////////////////////////////////////////////////////////////////

QCanvasNotationSprite::QCanvasNotationSprite(NotationElement& n,
        QPixmap* pixmap,
        QCanvas* canvas)
        : QCanvasSimpleSprite(pixmap, canvas),
        m_notationElement(n)
{}

QCanvasNotationSprite::QCanvasNotationSprite(NotationElement& n,
        QCanvasPixmap* pixmap,
        QCanvas* canvas)
        : QCanvasSimpleSprite(pixmap, canvas),
        m_notationElement(n)

{}

QCanvasNotationSprite::~QCanvasNotationSprite()
{}


QCanvasNonElementSprite::QCanvasNonElementSprite(QPixmap *pixmap,
        QCanvas *canvas) :
        QCanvasSimpleSprite(pixmap, canvas)
{}

QCanvasNonElementSprite::QCanvasNonElementSprite(QCanvasPixmap *pixmap,
        QCanvas *canvas) :
        QCanvasSimpleSprite(pixmap, canvas)
{}

QCanvasNonElementSprite::~QCanvasNonElementSprite()
{}

QCanvasTimeSigSprite::QCanvasTimeSigSprite(double layoutX,
        QPixmap *pixmap,
        QCanvas *canvas) :
        QCanvasNonElementSprite(pixmap, canvas),
        m_layoutX(layoutX)
{}

QCanvasTimeSigSprite::QCanvasTimeSigSprite(double layoutX,
        QCanvasPixmap *pixmap,
        QCanvas *canvas) :
        QCanvasNonElementSprite(pixmap, canvas),
        m_layoutX(layoutX)
{}

QCanvasTimeSigSprite::~QCanvasTimeSigSprite()
{}


QCanvasStaffNameSprite::QCanvasStaffNameSprite(QPixmap *pixmap,
        QCanvas *canvas) :
        QCanvasNonElementSprite(pixmap, canvas)
{}

QCanvasStaffNameSprite::QCanvasStaffNameSprite(QCanvasPixmap *pixmap,
        QCanvas *canvas) :
        QCanvasNonElementSprite(pixmap, canvas)
{}

QCanvasStaffNameSprite::~QCanvasStaffNameSprite()
{}


//////////////////////////////////////////////////////////////////////

void PixmapArrayGC::registerForDeletion(QCanvasPixmapArray* array)
{
    m_pixmapArrays.push_back(array);
}

void PixmapArrayGC::deleteAll()
{
    RG_DEBUG << "PixmapArrayGC::deleteAll() : "
    << m_pixmapArrays.size() << " pixmap arrays to delete\n";

    static unsigned long total = 0;

    for (unsigned int i = 0; i < m_pixmapArrays.size(); ++i) {
        QCanvasPixmapArray *array = m_pixmapArrays[i];
        QPixmap *pixmap = array->image(0);
        if (pixmap) {
            total += pixmap->width() * pixmap->height();
            //	    NOTATION_DEBUG << "PixmapArrayGC::deleteAll(): " << pixmap->width() << "x" << pixmap->height() << " (" << (pixmap->width()*pixmap->height()) << " px, " << total << " total)" << endl;
        }
        delete m_pixmapArrays[i];
    }

    m_pixmapArrays.clear();
}

std::vector<QCanvasPixmapArray*> PixmapArrayGC::m_pixmapArrays;

}

//////////////////////////////////////////////////////////////////////