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transmission/qt/Utils.cc

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// This file Copyright © 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.
#include <QAbstractItemView>
#include <QApplication>
#include <QColor>
#include <QCoreApplication>
#include <QDataStream>
#include <QFile>
#include <QFileIconProvider>
#include <QFileInfo>
#include <QHeaderView>
#include <QIcon>
#include <QInputDialog>
#include <QMimeDatabase>
#include <QMimeType>
#include <QObject>
#include <QPixmapCache>
#include <QStyle>
#include <libtransmission/transmission.h>
#include "Utils.h"
// ---
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);
#if QT_VERSION >= QT_VERSION_CHECK(6, 2, 0)
switch (variant.typeId())
#else
switch (static_cast<QMetaType::Type>(variant.type()))
#endif
{
case QMetaType::QIcon:
return qvariant_cast<QIcon>(variant);
case QMetaType::QPixmap:
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;
}
void Utils::updateSpinBoxFormat(QSpinBox* spinBox, char const* context, char const* format, QString const& placeholder)
{
QString const units_format = QCoreApplication::translate(context, format, nullptr, spinBox->value());
auto const placeholder_pos = units_format.indexOf(placeholder);
if (placeholder_pos == -1)
{
return;
}
auto const units_prefix = units_format.left(placeholder_pos);
auto const units_suffix = units_format.mid(placeholder_pos + placeholder.size());
if (spinBox->prefix() != units_prefix)
{
spinBox->setPrefix(units_prefix);
}
if (spinBox->suffix() != units_suffix)
{
spinBox->setSuffix(units_suffix);
}
}