PiecesBar Class Reference

#include <piecesbar.h>

Inheritance diagram for PiecesBar:

Collaboration diagram for PiecesBar:

Public Member Functions
	PiecesBar (QWidget *parent=nullptr)
void	setTorrent (const BitTorrent::Torrent *torrent)
virtual void	clear ()
virtual bool	event (QEvent *e) override

Protected Member Functions
void	enterEvent (QEnterEvent *e) override
void	leaveEvent (QEvent *e) override
void	mouseMoveEvent (QMouseEvent *e) override
void	paintEvent (QPaintEvent *e) override
void	requestImageUpdate ()
QColor	backgroundColor () const
QColor	borderColor () const
QColor	pieceColor () const
QColor	colorBoxBorderColor () const
const QVector< QRgb > &	pieceColors () const

Static Protected Member Functions
static QRgb	mixTwoColors (QRgb rgb1, QRgb rgb2, float ratio)

Static Protected Attributes
static constexpr int	borderWidth = 1

Private Types
using	base = QWidget

Private Member Functions
void	showToolTip (const QHelpEvent *)
void	highlightFile (int imagePos)
virtual QString	simpleToolTipText () const =0
virtual bool	updateImage (QImage &image)=0
void	updatePieceColors ()

Private Attributes
const BitTorrent::Torrent *	m_torrent = nullptr
QImage	m_image
QVector< QRgb >	m_pieceColors
bool	m_hovered = false
QRect	m_highlightedRegion

Detailed Description

Definition at line 43 of file piecesbar.h.

Member Typedef Documentation

base

using PiecesBar::base = QWidget

private

Definition at line 45 of file piecesbar.h.

Constructor & Destructor Documentation

PiecesBar()

PiecesBar::PiecesBar ( QWidget *  parent = nullptr )

explicit

Definition at line 113 of file piecesbar.cpp.

    : QWidget {parent}
{
    updatePieceColors();
    setMouseTracking(true);
}

References updatePieceColors().

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Member Function Documentation

backgroundColor()

QColor PiecesBar::backgroundColor ( ) const

protected

Definition at line 206 of file piecesbar.cpp.

{
    return palette().color(QPalette::Base);
}

Referenced by paintEvent(), DownloadedPiecesBar::simpleToolTipText(), PieceAvailabilityBar::simpleToolTipText(), DownloadedPiecesBar::updateImage(), PieceAvailabilityBar::updateImage(), and updatePieceColors().

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borderColor()

QColor PiecesBar::borderColor ( ) const

protected

Definition at line 211 of file piecesbar.cpp.

{
    return palette().color(QPalette::Dark);
}

Referenced by paintEvent(), DownloadedPiecesBar::simpleToolTipText(), and PieceAvailabilityBar::simpleToolTipText().

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clear()

void PiecesBar::clear ( )

virtual

Reimplemented in PieceAvailabilityBar, and DownloadedPiecesBar.

Definition at line 127 of file piecesbar.cpp.

{
    m_image = QImage();
    update();
}

References m_image.

Referenced by DownloadedPiecesBar::clear(), PieceAvailabilityBar::clear(), and setTorrent().

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colorBoxBorderColor()

QColor PiecesBar::colorBoxBorderColor ( ) const

protected

Definition at line 221 of file piecesbar.cpp.

{
    return palette().color(QPalette::ToolTipText);
}

Referenced by DownloadedPiecesBar::simpleToolTipText(), and PieceAvailabilityBar::simpleToolTipText().

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enterEvent()

void PiecesBar::enterEvent ( QEnterEvent *  e )

overrideprotected

Definition at line 145 of file piecesbar.cpp.

{
    m_hovered = true;
    base::enterEvent(e);
}

References nova3.nova2dl::e.

event()

bool PiecesBar::event ( QEvent *  e )

overridevirtual

Definition at line 133 of file piecesbar.cpp.

{
    if (e->type() == QEvent::ToolTip)
    {
        showToolTip(static_cast<QHelpEvent *>(e));
        return true;
    }
 
    return base::event(e);
}

References nova3.nova2dl::e, and showToolTip().

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highlightFile()

void PiecesBar::highlightFile ( int  imagePos )

private

Definition at line 305 of file piecesbar.cpp.

{
    if (!m_torrent || !m_torrent->hasMetadata() || (imagePos < 0) || (imagePos >= m_image.width()))
        return;
 
    const BitTorrent::TorrentInfo torrentInfo = m_torrent->info();
    PieceIndexToImagePos transform {torrentInfo, m_image};
 
    int pieceIndex = transform.pieceIndex(imagePos);
    QVector<int> fileIndices {torrentInfo.fileIndicesForPiece(pieceIndex)};
    if (fileIndices.count() == 1)
    {
        BitTorrent::TorrentInfo::PieceRange filePieces = torrentInfo.filePieces(fileIndices.first());
 
        ImageRange imageRange = transform.imagePos(filePieces);
        QRect newHighlightedRegion {imageRange.first(), 0, imageRange.size(), m_image.height()};
        if (newHighlightedRegion != m_highlightedRegion)
        {
            m_highlightedRegion = newHighlightedRegion;
            update();
        }
    }
    else if (!m_highlightedRegion.isEmpty())
    {
        m_highlightedRegion = {};
        update();
    }
}

References BitTorrent::TorrentInfo::fileIndicesForPiece(), BitTorrent::TorrentInfo::filePieces(), BitTorrent::Torrent::hasMetadata(), BitTorrent::Torrent::info(), m_highlightedRegion, m_image, and m_torrent.

Referenced by mouseMoveEvent().

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leaveEvent()

void PiecesBar::leaveEvent ( QEvent *  e )

overrideprotected

Definition at line 154 of file piecesbar.cpp.

{
    m_hovered = false;
    m_highlightedRegion = {};
    requestImageUpdate();
    base::leaveEvent(e);
}

References nova3.nova2dl::e, m_highlightedRegion, m_hovered, and requestImageUpdate().

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mixTwoColors()

QRgb PiecesBar::mixTwoColors ( QRgb  rgb1, QRgb  rgb2, float  ratio  )

staticprotected

Definition at line 231 of file piecesbar.cpp.

{
    int r1 = qRed(rgb1);
    int g1 = qGreen(rgb1);
    int b1 = qBlue(rgb1);
 
    int r2 = qRed(rgb2);
    int g2 = qGreen(rgb2);
    int b2 = qBlue(rgb2);
 
    float ratioN = 1.0f - ratio;
    int r = (r1 * ratioN) + (r2 * ratio);
    int g = (g1 * ratioN) + (g2 * ratio);
    int b = (b1 * ratioN) + (b2 * ratio);
 
    return qRgb(r, g, b);
}

Referenced by DownloadedPiecesBar::updateImage(), and updatePieceColors().

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mouseMoveEvent()

void PiecesBar::mouseMoveEvent ( QMouseEvent *  e )

overrideprotected

Definition at line 162 of file piecesbar.cpp.

{
    // if user pointed to a piece which is a part of a single large file,
    // we highlight the space, occupied by this file
    highlightFile(e->pos().x() - borderWidth);
    base::mouseMoveEvent(e);
}

References borderWidth, nova3.nova2dl::e, and highlightFile().

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paintEvent()

void PiecesBar::paintEvent ( QPaintEvent *  e )

overrideprotected

Definition at line 170 of file piecesbar.cpp.

{
    QPainter painter(this);
    QRect imageRect(borderWidth, borderWidth, width() - 2 * borderWidth, height() - 2 * borderWidth);
    if (m_image.isNull())
    {
        painter.setBrush(backgroundColor());
        painter.drawRect(imageRect);
    }
    else
    {
        if (m_image.width() != imageRect.width())
            updateImage(m_image);
        painter.drawImage(imageRect, m_image);
    }
 
    if (!m_highlightedRegion.isNull())
    {
        QColor highlightColor {this->palette().color(QPalette::Active, QPalette::Highlight)};
        highlightColor.setAlphaF(0.35f);
        QRect targetHighlightRect {m_highlightedRegion.adjusted(borderWidth, borderWidth, borderWidth, height() - 2 * borderWidth)};
        painter.fillRect(targetHighlightRect, highlightColor);
    }
 
    QPainterPath border;
    border.addRect(0, 0, width(), height());
    painter.setPen(borderColor());
    painter.drawPath(border);
}

References backgroundColor(), borderColor(), borderWidth, m_highlightedRegion, m_image, and updateImage().

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pieceColor()

QColor PiecesBar::pieceColor ( ) const

protected

Definition at line 216 of file piecesbar.cpp.

{
    return palette().color(QPalette::Highlight);
}

Referenced by DownloadedPiecesBar::simpleToolTipText(), PieceAvailabilityBar::simpleToolTipText(), DownloadedPiecesBar::updateImage(), and updatePieceColors().

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pieceColors()

const QVector< QRgb > & PiecesBar::pieceColors ( ) const

protected

Definition at line 226 of file piecesbar.cpp.

{
    return m_pieceColors;
}

References m_pieceColors.

Referenced by DownloadedPiecesBar::updateImage(), and PieceAvailabilityBar::updateImage().

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requestImageUpdate()

void PiecesBar::requestImageUpdate ( )

protected

Definition at line 200 of file piecesbar.cpp.

{
    if (updateImage(m_image))
        update();
}

References m_image, and updateImage().

Referenced by leaveEvent(), PieceAvailabilityBar::setAvailability(), and DownloadedPiecesBar::setProgress().

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setTorrent()

void PiecesBar::setTorrent

(

const BitTorrent::Torrent *

torrent

)

Definition at line 120 of file piecesbar.cpp.

{
    m_torrent = torrent;
    if (!m_torrent)
        clear();
}

References clear(), and m_torrent.

Referenced by PropertiesWidget::loadTorrentInfos().

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showToolTip()

void PiecesBar::showToolTip ( const QHelpEvent *  e )

private

Definition at line 249 of file piecesbar.cpp.

{
    if (!m_torrent)
        return;
 
    QString toolTipText;
    QTextStream stream(&toolTipText, QIODevice::WriteOnly);
    const bool showDetailedInformation = QApplication::keyboardModifiers().testFlag(Qt::ShiftModifier);
    if (showDetailedInformation && m_torrent->hasMetadata())
    {
        const BitTorrent::TorrentInfo torrentInfo = m_torrent->info();
        const int imagePos = e->pos().x() - borderWidth;
        if ((imagePos >=0) && (imagePos < m_image.width()))
        {
            stream << "<html><body>";
            PieceIndexToImagePos transform {torrentInfo, m_image};
            int pieceIndex = transform.pieceIndex(imagePos);
            const QVector<int> files {torrentInfo.fileIndicesForPiece(pieceIndex)};
 
            QString tooltipTitle;
            if (files.count() > 1)
            {
                tooltipTitle = tr("Files in this piece:");
            }
            else
            {
                if (torrentInfo.fileSize(files.front()) == torrentInfo.pieceLength(pieceIndex))
                    tooltipTitle = tr("File in this piece");
                else
                    tooltipTitle = tr("File in these pieces");
            }
 
            DetailedTooltipRenderer renderer(stream, tooltipTitle);
 
            for (int f : files)
            {
                const QString filePath {torrentInfo.filePath(f)};
                renderer(Utils::Misc::friendlyUnit(torrentInfo.fileSize(f)), filePath);
            }
            stream << "</body></html>";
        }
    }
    else
    {
        stream << simpleToolTipText();
        if (showDetailedInformation) // metadata are not available at this point
            stream << '\n' << tr("Wait until metadata become available to see detailed information");
        else
            stream << '\n' << tr("Hold Shift key for detailed information");
    }
 
    stream.flush();
 
    QToolTip::showText(e->globalPos(), toolTipText, this);
}

References borderWidth, nova3.nova2dl::e, f(), BitTorrent::TorrentInfo::fileIndicesForPiece(), BitTorrent::TorrentInfo::filePath(), files(), BitTorrent::TorrentInfo::fileSize(), Utils::Misc::friendlyUnit(), BitTorrent::Torrent::hasMetadata(), BitTorrent::Torrent::info(), m_image, m_torrent, BitTorrent::TorrentInfo::pieceLength(), and simpleToolTipText().

Referenced by event().

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simpleToolTipText()

virtual QString PiecesBar::simpleToolTipText ( ) const

privatepure virtual

Implemented in PieceAvailabilityBar, and DownloadedPiecesBar.

Referenced by showToolTip().

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updateImage()

virtual bool PiecesBar::updateImage ( QImage &  image )

privatepure virtual

Implemented in PieceAvailabilityBar, and DownloadedPiecesBar.

Referenced by paintEvent(), and requestImageUpdate().

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updatePieceColors()

void PiecesBar::updatePieceColors ( )

private

Definition at line 334 of file piecesbar.cpp.

{
    m_pieceColors = QVector<QRgb>(256);
    for (int i = 0; i < 256; ++i)
    {
        float ratio = (i / 255.0);
        m_pieceColors[i] = mixTwoColors(backgroundColor().rgb(), pieceColor().rgb(), ratio);
    }
}

References backgroundColor(), m_pieceColors, mixTwoColors(), and pieceColor().

Referenced by PiecesBar().

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Member Data Documentation

borderWidth

constexpr int PiecesBar::borderWidth = 1

staticconstexprprotected

Definition at line 81 of file piecesbar.h.

Referenced by mouseMoveEvent(), paintEvent(), showToolTip(), DownloadedPiecesBar::updateImage(), and PieceAvailabilityBar::updateImage().

m_highlightedRegion

QRect PiecesBar::m_highlightedRegion

private

Definition at line 99 of file piecesbar.h.

Referenced by highlightFile(), leaveEvent(), and paintEvent().

m_hovered

bool PiecesBar::m_hovered = false

private

Definition at line 98 of file piecesbar.h.

Referenced by leaveEvent().

m_image

QImage PiecesBar::m_image

private

Definition at line 95 of file piecesbar.h.

Referenced by clear(), highlightFile(), paintEvent(), requestImageUpdate(), and showToolTip().

m_pieceColors

QVector<QRgb> PiecesBar::m_pieceColors

private

Definition at line 97 of file piecesbar.h.

Referenced by pieceColors(), and updatePieceColors().

m_torrent

const BitTorrent::Torrent* PiecesBar::m_torrent = nullptr

private

Definition at line 94 of file piecesbar.h.

Referenced by highlightFile(), setTorrent(), and showToolTip().

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The documentation for this class was generated from the following files:

• src/gui/properties/piecesbar.h
• src/gui/properties/piecesbar.cpp