Apply themes with Cinnamon

app/app.pri

@@ -33,6 +33,7 @@ unix:!ios:!android {
         $${PWD}/src/desktopthemes/kdetheme.h \
         $${PWD}/src/desktopthemes/gnometheme.h \
         $${PWD}/src/desktopthemes/xfcetheme.h \
+        $${PWD}/src/desktopthemes/cinnamontheme.h \
         $${PWD}/src/desktopthemes/matetheme.h
 
     SOURCES += \
@@ -40,5 +41,6 @@ unix:!ios:!android {
         $${PWD}/src/desktopthemes/kdetheme.cpp \
         $${PWD}/src/desktopthemes/gnometheme.cpp \
         $${PWD}/src/desktopthemes/xfcetheme.cpp \
+        $${PWD}/src/desktopthemes/cinnamontheme.cpp \
         $${PWD}/src/desktopthemes/matetheme.cpp
 }

app/src/desktopthemes/cinnamontheme.cpp

+#include "cinnamontheme.h"
+
+#include <QStringList>
+#include <QDir>
+#include <QProcess>
+
+CinnamonTheme::CinnamonTheme(const QString &path, QObject *parent)
+    : QObject(parent), path_(path)
+{
+    themeName_ = QDir(path_).dirName();
+}
+
+bool CinnamonTheme::applyAsWallpaper() const
+{
+    return setConfig("org.cinnamon.desktop.background", "picture-uri", "file://" + path_);
+}
+
+bool CinnamonTheme::applyAsIcon() const
+{
+    return setConfig("org.cinnamon.desktop.interface", "icon-theme", themeName_);
+}
+
+bool CinnamonTheme::applyAsCursor() const
+{
+    return setConfig("org.cinnamon.desktop.interface", "cursor-theme", themeName_);
+}
+
+bool CinnamonTheme::applyAsGtk3Theme() const
+{
+    return setConfig("org.cinnamon.desktop.interface", "gtk-theme", themeName_);
+}
+
+bool CinnamonTheme::applyAsCinnamonTheme() const
+{
+    return setConfig("org.cinnamon.theme", "name", themeName_);
+}
+
+bool CinnamonTheme::setConfig(const QString &schema, const QString &key, const QString &value) const
+{
+    return QProcess::startDetached("gsettings", QStringList() << "set" << schema << key << value);
+}

app/src/desktopthemes/cinnamontheme.h

+#pragma once
+
+#include <QObject>
+
+class CinnamonTheme : public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit CinnamonTheme(const QString &path, QObject *parent = nullptr);
+
+    bool applyAsWallpaper() const;
+    bool applyAsIcon() const;
+    bool applyAsCursor() const;
+    bool applyAsGtk3Theme() const;
+    bool applyAsCinnamonTheme() const;
+
+private:
+    bool setConfig(const QString &schema, const QString &key, const QString &value) const;
+
+    QString path_;
+    QString themeName_;
+};

app/src/handlers/desktopthemehandler.cpp

@@ -8,6 +8,7 @@
 #include "desktopthemes/kdetheme.h"
 #include "desktopthemes/gnometheme.h"
 #include "desktopthemes/xfcetheme.h"
+#include "desktopthemes/cinnamontheme.h"
 #include "desktopthemes/matetheme.h"
 #endif
 
@@ -39,6 +40,9 @@ QString DesktopThemeHandler::desktopEnvironment() const
     else if (currentDesktop.contains("xfce")) {
         desktop = "xfce";
     }
+    else if (currentDesktop.contains("cinnamon")) {
+        desktop = "cinnamon";
+    }
     else if (currentDesktop.contains("mate")) {
         desktop = "mate";
     }
@@ -73,6 +77,13 @@ bool DesktopThemeHandler::isApplicableType(const QString &installType) const
                         << "gtk2_themes"
                         << "xfwm4_themes";
     }
+    else if (desktop == "cinnamon") {
+        applicableTypes << "wallpapers"
+                        << "icons"
+                        << "cursors"
+                        << "gtk3_themes"
+                        << "cinnamon_themes";
+    }
     else if (desktop == "mate") {
         applicableTypes << "wallpapers"
                         << "icons"
@@ -144,6 +155,24 @@ bool DesktopThemeHandler::applyTheme(const QString &path, const QString &install
                 return xfceTheme.applyAsXfwm4Theme();
             }
         }
+        else if (desktop == "cinnamon") {
+            CinnamonTheme cinnamonTheme(path);
+            if (installType == "wallpapers") {
+                return cinnamonTheme.applyAsWallpaper();
+            }
+            else if (installType == "icons") {
+                return cinnamonTheme.applyAsIcon();
+            }
+            else if (installType == "cursors") {
+                return cinnamonTheme.applyAsCursor();
+            }
+            else if (installType == "gtk3_themes") {
+                return cinnamonTheme.applyAsGtk3Theme();
+            }
+            else if (installType == "gnome_shell_themes") {
+                return cinnamonTheme.applyAsCinnamonTheme();
+            }
+        }
         else if (desktop == "mate") {
             MateTheme mateTheme(path);
             if (installType == "wallpapers") {