Function readThemeJson

launcher/ui/themes/CustomTheme.cpp:9–81

const char * styleFile = "themeStyle.css";

static bool readThemeJson(const QString &path, QPalette &palette, double &fadeAmount, QColor &fadeColor, QString &name, QString &widgets)
{
    QFileInfo pathInfo(path);
    if(pathInfo.exists() && pathInfo.isFile())
    {
        try
        {
            auto doc = Json::requireDocument(path, "Theme JSON file");
            const QJsonObject root = doc.object();
            name = Json::requireString(root, "name", "Theme name");
            widgets = Json::requireString(root, "widgets", "Qt widget theme");
            auto colorsRoot = Json::requireObject(root, "colors", "colors object");
            auto readColor = [&](QString colorName) -> QColor
            {
                auto colorValue = Json::ensureString(colorsRoot, colorName, QString());
                if(!colorValue.isEmpty())
                {
                    QColor color(colorValue);
                    if(!color.isValid())
                    {
                        qWarning() << "Color value" << colorValue << "for" << colorName << "was not recognized.";
                        return QColor();
                    }
                    return color;
                }
                return QColor();
            };
            auto readAndSetColor = [&](QPalette::ColorRole role, QString colorName)
            {
                auto color = readColor(colorName);
                if(color.isValid())
                {
                    palette.setColor(role, color);
                }
                else
                {
                    qDebug() << "Color value for" << colorName << "was not present.";
                }
            };

            // palette
            readAndSetColor(QPalette::Window, "Window");
            readAndSetColor(QPalette::WindowText, "WindowText");
            readAndSetColor(QPalette::Base, "Base");
            readAndSetColor(QPalette::AlternateBase, "AlternateBase");
            readAndSetColor(QPalette::ToolTipBase, "ToolTipBase");
            readAndSetColor(QPalette::ToolTipText, "ToolTipText");
            readAndSetColor(QPalette::Text, "Text");
            readAndSetColor(QPalette::Button, "Button");
            readAndSetColor(QPalette::ButtonText, "ButtonText");
            readAndSetColor(QPalette::BrightText, "BrightText");
            readAndSetColor(QPalette::Link, "Link");
            readAndSetColor(QPalette::Highlight, "Highlight");
            readAndSetColor(QPalette::HighlightedText, "HighlightedText");

            //fade
            fadeColor = readColor("fadeColor");
            fadeAmount = Json::ensureDouble(colorsRoot, "fadeAmount", 0.5, "fade amount");