Source Code/Citra/src/citra_qt/util/util.cpp

// Copyright 2015 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#include <array>
#include <cmath>
#include <QPainter>
#include "citra_qt/util/util.h"

QFont GetMonospaceFont() {
    QFont font(QStringLiteral("monospace"));
    // Automatic fallback to a monospace font on on platforms without a font called "monospace"
    font.setStyleHint(QFont::Monospace);
    font.setFixedPitch(true);
    return font;
}

QString ReadableByteSize(qulonglong size) {
    static const std::array<const char*, 6> units = {"B", "KiB", "MiB", "GiB", "TiB", "PiB"};
    if (size == 0)
        return QStringLiteral("0");
    int digit_groups = std::min<int>(static_cast<int>(std::log10(size) / std::log10(1024)),
                                     static_cast<int>(units.size()));
    return QStringLiteral("%L1 %2")
        .arg(size / std::pow(1024, digit_groups), 0, 'f', 1)
        .arg(QString::fromUtf8(units[digit_groups]));
}

QPixmap CreateCirclePixmapFromColor(const QColor& color) {
    QPixmap circle_pixmap(16, 16);
    circle_pixmap.fill(Qt::transparent);
    QPainter painter(&circle_pixmap);
    painter.setRenderHint(QPainter::Antialiasing);
    painter.setPen(color);
    painter.setBrush(color);
    painter.drawEllipse({circle_pixmap.width() / 2.0, circle_pixmap.height() / 2.0}, 7.0, 7.0);
    return circle_pixmap;
}