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/*
Copyright (C) 2021 Srivats P.
This file is part of "Ostinato"
This is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>
*/
#include "thememanager.h"
#include "settings.h"
#include <QApplication>
#include <QDebug>
#include <QDir>
#include <QDirIterator>
#include <QRegularExpression>
#include <QResource>
ThemeManager *ThemeManager::instance_{nullptr};
ThemeManager::ThemeManager()
{
themeDir_ = QCoreApplication::applicationDirPath() + "/themes/";
#if defined(Q_OS_MAC)
/*
* Executable and Theme directory location inside app bundle -
* Ostinato.app/Contents/MacOS/
* Ostinato.app/Contents/SharedSupport/themes/
*/
themeDir_.replace("/MacOS/", "/SharedSupport/");
#elif defined(Q_OS_UNIX)
/*
* Possible (but not comprehensive) locations for Ostinato executable
* and theme directory locations
*
* non-install-dir/
* non-install-dir/themes/
*
* /usr/[local]/bin/
* /usr/[local]/share/ostinato-controller/themes/
*
* /opt/ostinato/bin/
* /opt/ostinato/share/themes/
*/
if (themeDir_.contains(QRegularExpression("^/usr/.*/bin/")))
themeDir_.replace("/bin/", "/share/ostinato-controller/");
else if (themeDir_.contains(QRegularExpression("^/opt/.*/bin/")))
themeDir_.replace("/bin/", "/share/");
#endif
qDebug("Themes directory: %s", qPrintable(themeDir_));
}
QStringList ThemeManager::themeList()
{
QDir themeDir(themeDir_);
themeDir.setFilter(QDir::Files);
themeDir.setNameFilters(QStringList() << "*.qss");
themeDir.setSorting(QDir::Name);
QStringList themes = themeDir.entryList();
for (QString& theme : themes)
theme.remove(".qss");
themes.prepend("default");
return themes;
}
void ThemeManager::setTheme(QString theme)
{
// Remove current theme, if we have one
QString oldTheme = appSettings->value(kThemeKey).toString();
if (!oldTheme.isEmpty()) {
// Remove stylesheet first so that there are
// no references to resources when unregistering 'em
qApp->setStyleSheet("");
QString rccFile = themeDir_ + oldTheme + ".rcc";
if (QResource::unregisterResource(rccFile)) {
qDebug("Unable to unregister theme rccFile %s",
qPrintable(rccFile));
}
appSettings->setValue(kThemeKey, QVariant());
}
if (theme.isEmpty() || (theme == "default"))
return;
// Apply new theme
QFile qssFile(themeDir_ + theme + ".qss");
if (!qssFile.open(QFile::ReadOnly)) {
qDebug("Unable to open theme qssFile %s",
qPrintable(qssFile.fileName()));
return;
}
// Register theme resource before applying theme style sheet
QString rccFile = themeDir_ + theme + ".rcc";
if (!QResource::registerResource(rccFile))
qDebug("Unable to register theme rccFile %s", qPrintable(rccFile));
#if 0 // FIXME: debug only
QDirIterator it(":", QDirIterator::Subdirectories);
while (it.hasNext()) {
qDebug() << it.next();
}
#endif
QString styleSheet { qssFile.readAll() };
qApp->setStyleSheet(styleSheet);
appSettings->setValue(kThemeKey, theme);
}
ThemeManager* ThemeManager::instance()
{
if (!instance_)
instance_ = new ThemeManager();
return instance_;
}
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