338 lines
11 KiB
C++
338 lines
11 KiB
C++
// This file Copyright © 2009-2022 Mnemosyne LLC.
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// It may be used under GPLv2 (SPDX: GPL-2.0), GPLv3 (SPDX: GPL-3.0),
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// or any future license endorsed by Mnemosyne LLC.
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// License text can be found in the licenses/ folder.
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#include <QAbstractTextDocumentLayout>
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#include <QApplication>
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#include <QPainter>
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#include <QPixmap>
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#include <QTextDocument>
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#include <libtransmission/transmission.h>
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#include <libtransmission/utils.h>
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#include "FaviconCache.h"
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#include "Formatter.h"
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#include "Torrent.h"
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#include "TrackerDelegate.h"
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#include "TrackerModel.h"
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#include "Utils.h"
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/***
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****
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***/
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namespace
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{
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auto constexpr Spacing = int{ 6 };
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auto constexpr Margin = QSize{ 10, 10 };
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class ItemLayout
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{
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public:
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QRect icon_rect;
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QRect text_rect;
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ItemLayout(QString const& text, bool suppress_colors, Qt::LayoutDirection direction, QPoint const& top_left, int width);
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[[nodiscard]] QSize size() const
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{
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return (icon_rect | text_rect).size();
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}
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[[nodiscard]] QAbstractTextDocumentLayout* textLayout() const
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{
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return text_document_.documentLayout();
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}
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private:
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QTextDocument text_document_;
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};
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ItemLayout::ItemLayout(
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QString const& text,
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bool suppress_colors,
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Qt::LayoutDirection direction,
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QPoint const& top_left,
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int width)
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{
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QSize const icon_size = FaviconCache::getIconSize();
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QRect base_rect(top_left, QSize(width, 0));
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icon_rect = QStyle::alignedRect(direction, Qt::AlignLeft | Qt::AlignTop, icon_size, base_rect);
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Utils::narrowRect(base_rect, icon_size.width() + Spacing, 0, direction);
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text_document_.setDocumentMargin(0);
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text_document_.setTextWidth(base_rect.width());
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QTextOption text_option;
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text_option.setTextDirection(direction);
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if (suppress_colors)
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{
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text_option.setFlags(QTextOption::SuppressColors);
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}
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text_document_.setDefaultTextOption(text_option);
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text_document_.setHtml(text);
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text_rect = base_rect;
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text_rect.setSize(text_document_.size().toSize());
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}
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} // namespace
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/***
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****
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***/
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QSize TrackerDelegate::sizeHint(QStyleOptionViewItem const& option, TrackerInfo const& info) const
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{
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ItemLayout const layout(getText(info), true, option.direction, QPoint(0, 0), option.rect.width() - Margin.width() * 2);
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return layout.size() + Margin * 2;
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}
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QSize TrackerDelegate::sizeHint(QStyleOptionViewItem const& option, QModelIndex const& index) const
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{
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auto const tracker_info = index.data(TrackerModel::TrackerRole).value<TrackerInfo>();
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return sizeHint(option, tracker_info);
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}
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void TrackerDelegate::paint(QPainter* painter, QStyleOptionViewItem const& option, QModelIndex const& index) const
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{
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auto const tracker_info = index.data(TrackerModel::TrackerRole).value<TrackerInfo>();
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painter->save();
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painter->setClipRect(option.rect);
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drawBackground(painter, option, index);
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drawTracker(painter, option, tracker_info);
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drawFocus(painter, option, option.rect);
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painter->restore();
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}
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void TrackerDelegate::drawTracker(QPainter* painter, QStyleOptionViewItem const& option, TrackerInfo const& inf) const
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{
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bool const is_item_selected((option.state & QStyle::State_Selected) != 0);
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bool const is_item_enabled((option.state & QStyle::State_Enabled) != 0);
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bool const is_item_active((option.state & QStyle::State_Active) != 0);
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QIcon tracker_icon(inf.st.getFavicon());
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QRect const content_rect(option.rect.adjusted(Margin.width(), Margin.height(), -Margin.width(), -Margin.height()));
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ItemLayout const layout(getText(inf), is_item_selected, option.direction, content_rect.topLeft(), content_rect.width());
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painter->save();
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if (is_item_selected)
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{
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QPalette::ColorGroup cg = is_item_enabled ? QPalette::Normal : QPalette::Disabled;
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if (cg == QPalette::Normal && !is_item_active)
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{
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cg = QPalette::Inactive;
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}
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painter->fillRect(option.rect, option.palette.brush(cg, QPalette::Highlight));
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}
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tracker_icon
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.paint(painter, layout.icon_rect, Qt::AlignCenter, is_item_selected ? QIcon::Selected : QIcon::Normal, QIcon::On);
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QAbstractTextDocumentLayout::PaintContext paint_context;
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paint_context.clip = layout.text_rect.translated(-layout.text_rect.topLeft());
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paint_context.palette.setColor(
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QPalette::Text,
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option.palette.color(is_item_selected ? QPalette::HighlightedText : QPalette::Text));
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painter->translate(layout.text_rect.topLeft());
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layout.textLayout()->draw(painter, paint_context);
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painter->restore();
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}
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void TrackerDelegate::setShowMore(bool b)
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{
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show_more_ = b;
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}
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namespace
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{
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QString timeToStringRounded(int seconds)
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{
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if (seconds > 60)
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{
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seconds -= seconds % 60;
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}
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return Formatter::get().timeToString(seconds);
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}
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} // namespace
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QString TrackerDelegate::getText(TrackerInfo const& inf) const
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{
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QString key;
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QString str;
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auto const err_markup_begin = QStringLiteral("<span style=\"color:red\">");
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auto const err_markup_end = QStringLiteral("</span>");
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auto const timeout_markup_begin = QStringLiteral("<span style=\"color:#224466\">");
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auto const timeout_markup_end = QStringLiteral("</span>");
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auto const success_markup_begin = QStringLiteral("<span style=\"color:#008B00\">");
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auto const success_markup_end = QStringLiteral("</span>");
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auto const now = time(nullptr);
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auto const time_until = [&now](auto t)
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{
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return timeToStringRounded(static_cast<int>(t - now));
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};
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auto const time_since = [&now](auto t)
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{
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return timeToStringRounded(static_cast<int>(now - t));
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};
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// hostname
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str += inf.st.is_backup ? QStringLiteral("<i>") : QStringLiteral("<b>");
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auto const url = QUrl(inf.st.announce);
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str += QStringLiteral("%1:%2").arg(url.host()).arg(url.port(80));
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if (!key.isEmpty())
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{
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str += QStringLiteral(" - ") + key;
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}
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str += inf.st.is_backup ? QStringLiteral("</i>") : QStringLiteral("</b>");
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// announce & scrape info
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if (!inf.st.is_backup)
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{
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if (inf.st.has_announced && inf.st.announce_state != TR_TRACKER_INACTIVE)
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{
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auto const tstr = time_since(inf.st.last_announce_time);
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str += QStringLiteral("<br/>\n");
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if (inf.st.last_announce_succeeded)
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{
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//: %1 and %2 are replaced with HTML markup, %3 is duration
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str += tr("Got a list of%1 %Ln peer(s)%2 %3 ago", nullptr, inf.st.last_announce_peer_count)
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.arg(success_markup_begin)
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.arg(success_markup_end)
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.arg(tstr);
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}
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else if (inf.st.last_announce_timed_out)
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{
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//: %1 and %2 are replaced with HTML markup, %3 is duration
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str += tr("Peer list request %1timed out%2 %3 ago; will retry")
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.arg(timeout_markup_begin)
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.arg(timeout_markup_end)
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.arg(tstr);
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}
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else
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{
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//: %1 and %3 are replaced with HTML markup, %2 is error message, %4 is duration
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str += tr("Got an error %1\"%2\"%3 %4 ago")
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.arg(err_markup_begin)
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.arg(inf.st.last_announce_result)
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.arg(err_markup_end)
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.arg(tstr);
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}
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}
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switch (inf.st.announce_state)
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{
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case TR_TRACKER_INACTIVE:
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str += QStringLiteral("<br/>\n");
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str += tr("No updates scheduled");
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break;
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case TR_TRACKER_WAITING:
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str += QStringLiteral("<br/>\n");
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//: %1 is duration
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str += tr("Asking for more peers in %1").arg(time_until(inf.st.next_announce_time));
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break;
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case TR_TRACKER_QUEUED:
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str += QStringLiteral("<br/>\n");
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str += tr("Queued to ask for more peers");
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break;
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case TR_TRACKER_ACTIVE:
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str += QStringLiteral("<br/>\n");
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//: %1 is duration
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str += tr("Asking for more peers now... <small>%1</small>").arg(time_since(inf.st.last_announce_start_time));
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break;
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}
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if (!show_more_)
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{
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return str;
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}
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if (inf.st.has_scraped)
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{
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str += QStringLiteral("<br/>\n");
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auto const tstr = time_since(inf.st.last_scrape_time);
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if (!inf.st.last_scrape_succeeded)
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{
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//: %1 and %3 are replaced with HTML markup, %2 is error message, %4 is duration
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str += tr("Got a scrape error %1\"%2\"%3 %4 ago")
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.arg(err_markup_begin)
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.arg(inf.st.last_scrape_result)
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.arg(err_markup_end)
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.arg(tstr);
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}
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else if (inf.st.seeder_count >= 0 && inf.st.leecher_count >= 0)
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{
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//: First part of phrase "Tracker had ... seeder(s) and ... leecher(s) ... ago",
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//: %1 and %2 are replaced with HTML markup
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str += tr("Tracker had%1 %Ln seeder(s)%2", nullptr, inf.st.seeder_count)
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.arg(success_markup_begin)
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.arg(success_markup_end);
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//: Second part of phrase "Tracker had ... seeder(s) and ... leecher(s) ... ago",
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//: %1 and %2 are replaced with HTML markup, %3 is duration;
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//: notice that leading space (before "and") is included here
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str += tr(" and%1 %Ln leecher(s)%2 %3 ago", nullptr, inf.st.leecher_count)
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.arg(success_markup_begin)
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.arg(success_markup_end)
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.arg(tstr);
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}
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else
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{
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//: %1 and %2 are replaced with HTML markup, %3 is duration
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str += tr("Tracker had %1no information%2 on peer counts %3 ago")
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.arg(success_markup_begin)
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.arg(success_markup_end)
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.arg(tstr);
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}
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}
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switch (inf.st.scrape_state)
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{
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case TR_TRACKER_INACTIVE:
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break;
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case TR_TRACKER_WAITING:
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str += QStringLiteral("<br/>\n");
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//: %1 is duration
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str += tr("Asking for peer counts in %1").arg(time_until(inf.st.next_scrape_time));
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break;
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case TR_TRACKER_QUEUED:
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str += QStringLiteral("<br/>\n");
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str += tr("Queued to ask for peer counts");
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break;
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case TR_TRACKER_ACTIVE:
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str += QStringLiteral("<br/>\n");
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//: %1 is duration
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str += tr("Asking for peer counts now... <small>%1</small>").arg(time_since(inf.st.last_scrape_start_time));
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break;
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}
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}
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return str;
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}
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