File indexing completed on 2024-10-13 10:49:32

 /*
     SPDX-FileCopyrightText: 2018 Michail Vourlakos <mvourlakos@gmail.com>
     SPDX-License-Identifier: GPL-2.0-or-later
 
 */
 
 #include "commontools.h"
 
 // Qt
 #include <QDir>
 #include <QFileInfo>
 #include <QStandardPaths>
 #include <QStringList>
 #include <QtMath>
 
 namespace Latte {
 
 float colorBrightness(QColor color)
 {
     return colorBrightness(color.red(), color.green(), color.blue());
 }
 
 float colorBrightness(QRgb rgb)
 {
     return colorBrightness(qRed(rgb), qGreen(rgb), qBlue(rgb));
 }
 
 float colorBrightness(float r, float g, float b)
 {
     float brightness = (r * 299 + g * 587 + b * 114) / 1000;
 
     return brightness;
 }
 
 
 float colorLumina(QRgb rgb)
 {
     float r = (float)(qRed(rgb)) / 255;
     float g = (float)(qGreen(rgb)) / 255;
     float b = (float)(qBlue(rgb)) / 255;
 
     return colorLumina(r, g, b);
 }
 
 float colorLumina(QColor color)
 {
     return colorLumina(color.redF(), color.greenF(), color.blueF());
 }
 
 float colorLumina(float r, float g, float b)
 {
     // formula for luminance according to:
     // https://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
 
     float rS = (r <= 0.03928 ? r / 12.92 : qPow(((r + 0.055) / 1.055), 2.4));
     float gS = (g <= 0.03928 ? g / 12.92 : qPow(((g + 0.055) / 1.055), 2.4));
     float bS = (b <= 0.03928 ? b / 12.92 : qPow(((b + 0.055) / 1.055), 2.4));
 
     float luminosity = 0.2126 * rS + 0.7152 * gS + 0.0722 * bS;
 
     return luminosity;
 }
 
 QString rectToString(const QRect &rect)
 {
     QString result;
     result += QString(QString::number(rect.x()) + ","  + QString::number(rect.y()));
     result += " ";
     result += QString(QString::number(rect.width()) + "x" + QString::number(rect.height()));
 
     return result;
 }
 
 QRect stringToRect(const QString &str)
 {
     QStringList parts = str.split(" ");
     QStringList pos = parts[0].split(",");
     QStringList size = parts[1].split("x");
     return QRect(pos[0].toInt(), pos[1].toInt(), size[0].toInt(), size[1].toInt());
 }
 
 QString standardPath(QString subPath, bool localfirst)
 {
     QStringList paths = QStandardPaths::standardLocations(QStandardPaths::GenericDataLocation);
 
     QString separator = subPath.startsWith("/") ? "" : "/";
 
     if (localfirst) {
         for (const auto &pt : paths) {
             QString ptF = pt + separator +subPath;
             if (QFileInfo(ptF).exists()) {
                 return ptF;
             }
         }
     } else {
         for (int i=paths.count()-1; i>=0; i--) {
             QString ptF = paths[i] + separator +subPath;
             if (QFileInfo(ptF).exists()) {
                 return ptF;
             }
         }
     }
 
     //! in any case that above fails
     if (QFileInfo("/usr/share" + separator + subPath).exists()) {
         return "/usr/share" + separator + subPath;
     }
 
     return "";
 }
 
 QString configPath()
 {
     QStringList configPaths = QStandardPaths::standardLocations(QStandardPaths::ConfigLocation);
 
     if (configPaths.count() == 0) {
         return QDir::homePath() + "/.config";
     }
 
     return configPaths[0];
 }
 
 
 }