qBittorrent/src/gui/properties/downloadedpiecesbar.h

/*
 * Bittorrent Client using Qt and libtorrent.
 * Copyright (C) 2006  Christophe Dumez <chris@qbittorrent.org>
 *
 * 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; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * In addition, as a special exception, the copyright holders give permission to
 * link this program with the OpenSSL project's "OpenSSL" library (or with
 * modified versions of it that use the same license as the "OpenSSL" library),
 * and distribute the linked executables. You must obey the GNU General Public
 * License in all respects for all of the code used other than "OpenSSL".  If you
 * modify file(s), you may extend this exception to your version of the file(s),
 * but you are not obligated to do so. If you do not wish to do so, delete this
 * exception statement from your version.
 */

#ifndef DOWNLOADEDPIECESBAR_H
#define DOWNLOADEDPIECESBAR_H

#include <QBitArray>
#include <QVector>
#include <QWidget>

#include "piecesbar.h"

class DownloadedPiecesBar : public PiecesBar
{
    using base = PiecesBar;
    Q_OBJECT
    Q_DISABLE_COPY(DownloadedPiecesBar)

public:
    DownloadedPiecesBar(QWidget *parent);

    void setProgress(const QBitArray &pieces, const QBitArray &downloadedPieces);

    void setColors(const QColor &background, const QColor &border, const QColor &complete, const QColor &incomplete);

    // PiecesBar interface
    void clear() override;

private:
    // scale bitfield vector to float vector
    QVector<float> bitfieldToFloatVector(const QBitArray &vecin, int reqSize);
    virtual bool updateImage(QImage &image) override;
    QString simpleToolTipText() const override;

    // incomplete piece color
    QColor m_dlPieceColor;
    // last used bitfields, uses to better resize redraw
    // TODO: make a diff pieces to new pieces and update only changed pixels, speedup when update > 20x faster
    QBitArray m_pieces;
    QBitArray m_downloadedPieces;
};

#endif // DOWNLOADEDPIECESBAR_H