transmission/qt/TrackerDelegate.cc

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/*
* This file Copyright (C) 2009-2015 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
*/
#include <QAbstractTextDocumentLayout>
#include <QApplication>
#include <QPainter>
#include <QPixmap>
#include <QTextDocument>
#include <libtransmission/transmission.h>
#include <libtransmission/utils.h>
#include "FaviconCache.h"
#include "Formatter.h"
#include "Torrent.h"
#include "TrackerDelegate.h"
#include "TrackerModel.h"
#include "Utils.h"
/***
****
***/
namespace
{
int const mySpacing = 6;
QSize const myMargin(10, 10);
class ItemLayout
{
private:
QTextDocument myTextDocument;
public:
QRect iconRect;
QRect textRect;
ItemLayout(QString const& text, bool suppressColors, Qt::LayoutDirection direction, QPoint const& topLeft, int width);
QSize size() const
{
return (iconRect | textRect).size();
}
QAbstractTextDocumentLayout* textLayout() const
{
return myTextDocument.documentLayout();
}
};
ItemLayout::ItemLayout(QString const& text, bool suppressColors, Qt::LayoutDirection direction, QPoint const& topLeft,
int width)
{
QStyle const* style(qApp->style());
QSize const iconSize = FaviconCache::getIconSize();
QRect baseRect(topLeft, QSize(width, 0));
iconRect = style->alignedRect(direction, Qt::AlignLeft | Qt::AlignTop, iconSize, baseRect);
Utils::narrowRect(baseRect, iconSize.width() + mySpacing, 0, direction);
myTextDocument.setDocumentMargin(0);
myTextDocument.setTextWidth(baseRect.width());
QTextOption textOption;
textOption.setTextDirection(direction);
if (suppressColors)
{
textOption.setFlags(QTextOption::SuppressColors);
}
myTextDocument.setDefaultTextOption(textOption);
myTextDocument.setHtml(text);
textRect = baseRect;
textRect.setSize(myTextDocument.size().toSize());
}
} // namespace
/***
****
***/
QSize TrackerDelegate::sizeHint(QStyleOptionViewItem const& option, TrackerInfo const& info) const
{
ItemLayout const layout(getText(info), true, option.direction, QPoint(0, 0), option.rect.width() - myMargin.width() * 2);
return layout.size() + myMargin * 2;
}
QSize TrackerDelegate::sizeHint(QStyleOptionViewItem const& option, QModelIndex const& index) const
{
auto const trackerInfo = index.data(TrackerModel::TrackerRole).value<TrackerInfo>();
return sizeHint(option, trackerInfo);
}
void TrackerDelegate::paint(QPainter* painter, QStyleOptionViewItem const& option, QModelIndex const& index) const
{
auto const trackerInfo = index.data(TrackerModel::TrackerRole).value<TrackerInfo>();
painter->save();
painter->setClipRect(option.rect);
drawBackground(painter, option, index);
drawTracker(painter, option, trackerInfo);
drawFocus(painter, option, option.rect);
painter->restore();
}
void TrackerDelegate::drawTracker(QPainter* painter, QStyleOptionViewItem const& option, TrackerInfo const& inf) const
{
bool const isItemSelected((option.state & QStyle::State_Selected) != 0);
bool const isItemEnabled((option.state & QStyle::State_Enabled) != 0);
bool const isItemActive((option.state & QStyle::State_Active) != 0);
QIcon trackerIcon(inf.st.getFavicon());
QRect const contentRect(option.rect.adjusted(myMargin.width(), myMargin.height(), -myMargin.width(), -myMargin.height()));
ItemLayout const layout(getText(inf), isItemSelected, option.direction, contentRect.topLeft(), contentRect.width());
painter->save();
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if (isItemSelected)
{
QPalette::ColorGroup cg = isItemEnabled ? QPalette::Normal : QPalette::Disabled;
if (cg == QPalette::Normal && !isItemActive)
{
cg = QPalette::Inactive;
}
painter->fillRect(option.rect, option.palette.brush(cg, QPalette::Highlight));
}
trackerIcon.paint(painter, layout.iconRect, Qt::AlignCenter, isItemSelected ? QIcon::Selected : QIcon::Normal, QIcon::On);
QAbstractTextDocumentLayout::PaintContext paintContext;
paintContext.clip = layout.textRect.translated(-layout.textRect.topLeft());
paintContext.palette.setColor(QPalette::Text,
option.palette.color(isItemSelected ? QPalette::HighlightedText : QPalette::Text));
painter->translate(layout.textRect.topLeft());
layout.textLayout()->draw(painter, paintContext);
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painter->restore();
}
void TrackerDelegate::setShowMore(bool b)
{
myShowMore = b;
}
namespace
{
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QString timeToStringRounded(int seconds)
{
if (seconds > 60)
{
seconds -= seconds % 60;
}
return Formatter::timeToString(seconds);
}
} // namespace
QString TrackerDelegate::getText(TrackerInfo const& inf) const
{
QString key;
QString str;
time_t const now(time(nullptr));
QString const err_markup_begin = QLatin1String("<span style=\"color:red\">");
QString const err_markup_end = QLatin1String("</span>");
QString const timeout_markup_begin = QLatin1String("<span style=\"color:#224466\">");
QString const timeout_markup_end = QLatin1String("</span>");
QString const success_markup_begin = QLatin1String("<span style=\"color:#008B00\">");
QString const success_markup_end = QLatin1String("</span>");
// hostname
str += inf.st.isBackup ? QLatin1String("<i>") : QLatin1String("<b>");
char* host = nullptr;
int port = 0;
tr_urlParse(inf.st.announce.toUtf8().constData(), TR_BAD_SIZE, nullptr, &host, &port, nullptr);
str += QString::fromLatin1("%1:%2").arg(QString::fromUtf8(host)).arg(port);
tr_free(host);
if (!key.isEmpty())
{
str += QLatin1String(" - ") + key;
}
str += inf.st.isBackup ? QLatin1String("</i>") : QLatin1String("</b>");
// announce & scrape info
if (!inf.st.isBackup)
{
if (inf.st.hasAnnounced && inf.st.announceState != TR_TRACKER_INACTIVE)
{
QString const tstr(timeToStringRounded(now - inf.st.lastAnnounceTime));
str += QLatin1String("<br/>\n");
if (inf.st.lastAnnounceSucceeded)
{
//: %1 and %2 are replaced with HTML markup, %3 is duration
str += tr("Got a list of%1 %Ln peer(s)%2 %3 ago", nullptr, inf.st.lastAnnouncePeerCount).
arg(success_markup_begin).arg(success_markup_end).arg(tstr);
}
else if (inf.st.lastAnnounceTimedOut)
{
//: %1 and %2 are replaced with HTML markup, %3 is duration
str += tr("Peer list request %1timed out%2 %3 ago; will retry").arg(timeout_markup_begin).
arg(timeout_markup_end).arg(tstr);
}
else
{
//: %1 and %3 are replaced with HTML markup, %2 is error message, %4 is duration
str += tr("Got an error %1\"%2\"%3 %4 ago").arg(err_markup_begin).arg(inf.st.lastAnnounceResult).
arg(err_markup_end).arg(tstr);
}
}
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switch (inf.st.announceState)
{
case TR_TRACKER_INACTIVE:
str += QLatin1String("<br/>\n");
str += tr("No updates scheduled");
break;
case TR_TRACKER_WAITING:
{
QString const tstr(timeToStringRounded(inf.st.nextAnnounceTime - now));
str += QLatin1String("<br/>\n");
//: %1 is duration
str += tr("Asking for more peers in %1").arg(tstr);
break;
}
case TR_TRACKER_QUEUED:
str += QLatin1String("<br/>\n");
str += tr("Queued to ask for more peers");
break;
case TR_TRACKER_ACTIVE:
{
QString const tstr(timeToStringRounded(now - inf.st.lastAnnounceStartTime));
str += QLatin1String("<br/>\n");
//: %1 is duration
str += tr("Asking for more peers now... <small>%1</small>").arg(tstr);
break;
}
}
if (myShowMore)
{
if (inf.st.hasScraped)
{
str += QLatin1String("<br/>\n");
QString const tstr(timeToStringRounded(now - inf.st.lastScrapeTime));
if (inf.st.lastScrapeSucceeded)
{
if (inf.st.seederCount >= 0 && inf.st.leecherCount >= 0)
{
//: First part of phrase "Tracker had ... seeder(s) and ... leecher(s) ... ago";
//: %1 and %2 are replaced with HTML markup
str += tr("Tracker had%1 %Ln seeder(s)%2", nullptr, inf.st.seederCount).arg(success_markup_begin).
arg(success_markup_end);
//: Second part of phrase "Tracker had ... seeder(s) and ... leecher(s) ... ago";
//: %1 and %2 are replaced with HTML markup, %3 is duration;
//: notice that leading space (before "and") is included here
str += tr(" and%1 %Ln leecher(s)%2 %3 ago", nullptr, inf.st.leecherCount).arg(success_markup_begin).
arg(success_markup_end).arg(tstr);
}
else
{
//: %1 and %2 are replaced with HTML markup, %3 is duration
str += tr("Tracker had %1no information%2 on peer counts %3 ago").arg(success_markup_begin).
arg(success_markup_end).arg(tstr);
}
}
else
{
//: %1 and %3 are replaced with HTML markup, %2 is error message, %4 is duration
str += tr("Got a scrape error %1\"%2\"%3 %4 ago").arg(err_markup_begin).arg(inf.st.lastScrapeResult).
arg(err_markup_end).arg(tstr);
}
}
switch (inf.st.scrapeState)
{
case TR_TRACKER_INACTIVE:
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break;
case TR_TRACKER_WAITING:
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{
str += QLatin1String("<br/>\n");
QString const tstr(timeToStringRounded(inf.st.nextScrapeTime - now));
//: %1 is duration
str += tr("Asking for peer counts in %1").arg(tstr);
break;
}
case TR_TRACKER_QUEUED:
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{
str += QLatin1String("<br/>\n");
str += tr("Queued to ask for peer counts");
break;
}
case TR_TRACKER_ACTIVE:
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{
str += QLatin1String("<br/>\n");
QString const tstr(timeToStringRounded(now - inf.st.lastScrapeStartTime));
//: %1 is duration
str += tr("Asking for peer counts now... <small>%1</small>").arg(tstr);
break;
}
}
}
}
return str;
}