transmission/qt/Utils.cc

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// This file Copyright © 2009-2022 Mnemosyne LLC.
// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
// or any future license endorsed by Mnemosyne LLC.
// License text can be found in the licenses/ folder.
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#include <QAbstractItemView>
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#include <QApplication>
#include <QColor>
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#include <QDataStream>
#include <QFile>
#include <QFileIconProvider>
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#include <QFileInfo>
#include <QHeaderView>
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#include <QIcon>
#include <QInputDialog>
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#include <QMimeDatabase>
#include <QMimeType>
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#include <QObject>
#include <QPixmapCache>
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#include <QStyle>
#include <libtransmission/transmission.h>
#include <libtransmission/utils.h> // tr_formatter
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#include "Utils.h"
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/***
****
***/
namespace
{
bool isSlashChar(QChar const& c)
{
return c == QLatin1Char('/') || c == QLatin1Char('\\');
}
} // namespace
QIcon Utils::getIconFromIndex(QModelIndex const& index)
{
QVariant const variant = index.data(Qt::DecorationRole);
switch (variant.type())
{
case QVariant::Icon:
return qvariant_cast<QIcon>(variant);
case QVariant::Pixmap:
return qvariant_cast<QPixmap>(variant);
default:
return {};
}
}
QString Utils::removeTrailingDirSeparator(QString const& path)
{
int i = path.size();
while (i > 1 && isSlashChar(path[i - 1]))
{
--i;
}
return path.left(i);
}
int Utils::measureViewItem(QAbstractItemView const* view, QString const& text)
{
QStyleOptionViewItem option;
option.initFrom(view);
option.features = QStyleOptionViewItem::HasDisplay;
option.text = text;
option.textElideMode = Qt::ElideNone;
option.font = view->font();
return view->style()
->sizeFromContents(QStyle::CT_ItemViewItem, &option, QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX), view)
.width();
}
int Utils::measureHeaderItem(QHeaderView const* view, QString const& text)
{
QStyleOptionHeader option;
option.initFrom(view);
option.text = text;
option.sortIndicator = view->isSortIndicatorShown() ? QStyleOptionHeader::SortDown : QStyleOptionHeader::None;
return view->style()->sizeFromContents(QStyle::CT_HeaderSection, &option, QSize(), view).width();
}
QColor Utils::getFadedColor(QColor const& color)
{
QColor faded_color(color);
faded_color.setAlpha(128);
return faded_color;
}