transmission/qt/Formatter.h

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// This file Copyright © 2012-2022 Mnemosyne LLC.
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// 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.
#pragma once
#include <array>
#include <cstdint> // int64_t
#include <QCoreApplication> // Q_DECLARE_TR_FUNCTIONS
#include <QString>
#include <libtransmission/utils.h>
#include "Speed.h"
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class Formatter
{
Q_DECLARE_TR_FUNCTIONS(Formatter)
public:
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enum Size
{
B,
KB,
MB,
GB,
TB,
NUM_SIZES
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};
enum Type
{
SPEED,
SIZE,
MEM,
NUM_TYPES
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};
static constexpr int SpeedBase = 1000;
static constexpr int SizeBase = 1000;
static constexpr int MemBase = 1024;
[[nodiscard]] static Formatter& get();
[[nodiscard]] QString memToString(int64_t bytes) const;
[[nodiscard]] QString sizeToString(int64_t bytes) const;
[[nodiscard]] QString sizeToString(uint64_t bytes) const;
[[nodiscard]] QString timeToString(int seconds) const;
[[nodiscard]] QString unitStr(Type t, Size s) const;
[[nodiscard]] auto speedToString(Speed const& speed) const
{
return QString::fromStdString(tr_formatter_speed_KBps(speed.getKBps()));
}
[[nodiscard]] auto uploadSpeedToString(Speed const& upload_speed) const
{
static auto constexpr UploadSymbol = QChar{ 0x25B4 };
return tr("%1 %2").arg(speedToString(upload_speed)).arg(UploadSymbol);
}
[[nodiscard]] auto downloadSpeedToString(Speed const& download_speed) const
{
static auto constexpr DownloadSymbol = QChar{ 0x25BE };
return tr("%1 %2").arg(speedToString(download_speed)).arg(DownloadSymbol);
}
[[nodiscard]] auto percentToString(double x) const
{
return QString::fromStdString(tr_strpercent(x));
}
[[nodiscard]] auto ratioToString(double ratio) const
{
static auto constexpr InfinitySymbol = "\xE2\x88\x9E";
return QString::fromStdString(tr_strratio(ratio, InfinitySymbol));
}
protected:
Formatter();
private:
std::array<std::array<QString, Formatter::NUM_SIZES>, Formatter::NUM_TYPES> const UnitStrings;
};