plasma-workspace/kcms/cursortheme/plasma-apply-cursortheme.cpp

/*
   Copyright (c) 2021 Dan Leinir Turthra Jensen <admin@leinir.dk>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License version 2 as published by the Free Software Foundation.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/

#include "cursorthemesettings.h"

#include "../kcms-common_p.h"

#include "xcursor/themeapplicator.h"
#include "xcursor/thememodel.h"
#include "xcursor/cursortheme.h"

#include <KLocalizedString>

#include <QApplication>
#include <QCommandLineParser>
#include <QDebug>
#include <QFile>
#include <QTimer>

int main(int argc, char **argv)
{
    // This is a CLI application, but we require at least a QGuiApplication for things
    // in Plasma::Theme, so let's just roll with one of these
    QApplication app(argc, argv);
    QCoreApplication::setApplicationName(QStringLiteral("plasma-apply-cursortheme"));
    QCoreApplication::setApplicationVersion(QStringLiteral("1.0"));
    QCoreApplication::setOrganizationDomain(QStringLiteral("kde.org"));
    KLocalizedString::setApplicationDomain("plasma-apply-cursortheme");

    QCommandLineParser *parser = new QCommandLineParser;
    parser->addHelpOption();
    parser->setApplicationDescription(i18n("This tool allows you to set the mouse cursor theme for the current Plasma session, without accidentally setting it to one that is either not available, or which is already set."));
    parser->addPositionalArgument(QStringLiteral("cursortheme"), i18n("The name of the cursor theme you wish to set for your current Plasma session (passing a full path will only use the last part of the path)"));
    parser->addOption(QCommandLineOption(QStringLiteral("list-themes"), i18n("Show all the themes available on the system (and which is the current theme)")));
    parser->process(app);

    int errorCode{0};
    CursorThemeSettings* settings = new CursorThemeSettings(&app);
    QTextStream ts(stdout);
    CursorThemeModel* model = new CursorThemeModel(&app);
    if (!parser->positionalArguments().isEmpty()) {
        QString requestedTheme{parser->positionalArguments().first()};
        const QString dirSplit{"/"};
        if (requestedTheme.contains(dirSplit)) {
            QStringList splitTheme = requestedTheme.split(dirSplit, Qt::SkipEmptyParts);
            // Cursor themes installed through KNewStuff will commonly be given an installed files entry
            // which has the main directory name and an asterix to say the cursors are all in that directory,
            // and since one of the main purposes of this tool is to allow adopting things from a kns dialog,
            // we handle that little weirdness here.
            splitTheme.removeAll(QStringLiteral("*"));
            requestedTheme = splitTheme.last();
        }

        if (settings->cursorTheme() == requestedTheme) {
            ts << i18n("The requested theme \"%1\" is already set as the theme for the current Plasma session.", requestedTheme) << endl;
            // This is not an error condition, no reason to set an error code
        } else {
            auto results = model->findIndex(requestedTheme);
            QModelIndex selected = model->index(results.row(), 0);
            const CursorTheme *theme = selected.isValid() ? model->theme(selected) : nullptr;

            if (theme) {
                settings->setCursorTheme(theme->name());
                if (settings->save() && applyTheme(theme, theme->defaultCursorSize())) {
                    notifyKcmChange(GlobalChangeType::CursorChanged);
                    ts << i18n("Successfully applied the mouse cursor theme %1 to your current Plasma session", theme->title()) << endl;
                } else {
                    ts << i18n("You have to restart the Plasma session for your newly applied mouse cursor theme to display correctly.") << endl;
                    // A bit of an odd one, more a warning than an error, but this means we can forward it
                    errorCode = -1;
                }
            } else {
                QStringList availableThemes;
                for (int i = 0 ; i < model->rowCount(); ++i) {
                    const CursorTheme* theme = model->theme(model->index(i, 0));
                    availableThemes << theme->name();
                }
                ts << i18n("Could not find theme \"%1\". The theme should be one of the following options: %2", requestedTheme, availableThemes.join(QLatin1String{", "})) << endl;
                errorCode = -1;
            }
        }
    } else if (parser->isSet(QStringLiteral("list-themes"))) {
        ts << i18n("You have the following mouse cursor themes on your system:") << endl;
        for (int i = 0 ; i < model->rowCount(); ++i) {
            const CursorTheme* theme = model->theme(model->index(i, 0));
            if (settings->cursorTheme() == theme->name()) {
                ts << QString(" * %1 (%2 - current theme for this Plasma session)").arg(theme->title()).arg(theme->name()) << endl;
            } else {
                ts << QString(" * %1 (%2)").arg(theme->title()).arg(theme->name()) << endl;
            }
        }
    } else {
        parser->showHelp();
    }
    QTimer::singleShot(0, &app, [&app,&errorCode](){ app.exit(errorCode); });

    return app.exec();
}