cursormgr: add a new setting to sync gsettings (#7253)

cursor:sync_gsettings_theme is set to default true and if enabled it
will now sync xcursor theme loading with gsettings if it can, meaning
CSD clients will now also change to the appropiate theme upon start and
hyprctl setcursor THEME SIZE .

CMakeLists.txt

@@ -117,6 +117,7 @@ pkg_check_modules(
   libliftoff
   libudev
   gbm
+  gio-2.0
   hyprlang>=0.3.2
   hyprcursor>=0.1.7
   hyprutils>=0.2.1)

meson.build

@@ -34,6 +34,8 @@ xcb_render_dep = dependency('xcb-render', required: get_option('xwayland'))
 xcb_res_dep = dependency('xcb-res', required: get_option('xwayland'))
 xcb_xfixes_dep = dependency('xcb-xfixes', required: get_option('xwayland'))
 
+gio_dep = dependency('gio-2.0', required:true)
+
 cmake = import('cmake')
 udis = cmake.subproject('udis86')
 udis86 = udis.dependency('libudis86')

src/config/ConfigManager.cpp

@@ -539,6 +539,7 @@ CConfigManager::CConfigManager() {
     m_pConfig->addConfigValue("cursor:zoom_factor", {1.f});
     m_pConfig->addConfigValue("cursor:zoom_rigid", Hyprlang::INT{0});
     m_pConfig->addConfigValue("cursor:enable_hyprcursor", Hyprlang::INT{1});
+    m_pConfig->addConfigValue("cursor:sync_gsettings_theme", Hyprlang::INT{1});
     m_pConfig->addConfigValue("cursor:hide_on_key_press", Hyprlang::INT{0});
     m_pConfig->addConfigValue("cursor:hide_on_touch", Hyprlang::INT{1});
     m_pConfig->addConfigValue("cursor:allow_dumb_copy", Hyprlang::INT{0});

src/managers/XCursorManager.cpp

@@ -1,6 +1,9 @@
 #include <cstring>
 #include <dirent.h>
 #include <filesystem>
+#include <gio/gio.h>
+#include <gio/gsettingsschema.h>
+#include "config/ConfigValue.hpp"
 #include "helpers/CursorShapes.hpp"
 #include "debug/Log.hpp"
 #include "XCursorManager.hpp"
@@ -146,6 +149,10 @@ void CXCursorManager::loadTheme(std::string const& name, int size) {
 
         cursors.emplace_back(cursor);
     }
+
+    static auto SYNCGSETTINGS = CConfigValue<Hyprlang::INT>("cursor:sync_gsettings_theme");
+    if (*SYNCGSETTINGS)
+        syncGsettings();
 }
 
 SP<SXCursors> CXCursorManager::getShape(std::string const& shape, int size) {
@@ -542,3 +549,55 @@ std::vector<SP<SXCursors>> CXCursorManager::loadAllFromDir(std::string const& pa
 
     return newCursors;
 }
+
+void CXCursorManager::syncGsettings() {
+    auto checkParamExists = [](std::string const& paramName, std::string const& category) {
+        auto* gSettingsSchemaSource = g_settings_schema_source_get_default();
+
+        if (!gSettingsSchemaSource) {
+            Debug::log(WARN, "GSettings default schema source does not exist, cant sync GSettings");
+            return false;
+        }
+
+        auto* gSettingsSchema = g_settings_schema_source_lookup(gSettingsSchemaSource, category.c_str(), true);
+        bool  hasParam        = false;
+
+        if (gSettingsSchema != NULL) {
+            hasParam = gSettingsSchema && g_settings_schema_has_key(gSettingsSchema, paramName.c_str());
+            g_settings_schema_unref(gSettingsSchema);
+        }
+
+        return hasParam;
+    };
+
+    using SettingValue = std::variant<std::string, int>;
+    auto setValue      = [&checkParamExists](std::string const& paramName, const SettingValue& paramValue, std::string const& category) {
+        if (!checkParamExists(paramName, category)) {
+            Debug::log(WARN, "GSettings parameter doesnt exist {} in {}", paramName, category);
+            return;
+        }
+
+        auto* gsettings = g_settings_new(category.c_str());
+
+        if (!gsettings) {
+            Debug::log(WARN, "GSettings failed to allocate new settings with category {}", category);
+            return;
+        }
+
+        std::visit(
+            [&](auto&& value) {
+                using T = std::decay_t<decltype(value)>;
+                if constexpr (std::is_same_v<T, std::string>)
+                    g_settings_set_string(gsettings, paramName.c_str(), value.c_str());
+                else if constexpr (std::is_same_v<T, int>)
+                    g_settings_set_int(gsettings, paramName.c_str(), value);
+            },
+            paramValue);
+
+        g_settings_sync();
+        g_object_unref(gsettings);
+    };
+
+    setValue("cursor-theme", themeName, "org.gnome.desktop.interface");
+    setValue("cursor-size", lastLoadSize, "org.gnome.desktop.interface");
+}

src/managers/XCursorManager.hpp

@@ -38,6 +38,7 @@ class CXCursorManager {
     std::string                     getLegacyShapeName(std::string const& shape);
     std::vector<SP<SXCursors>>      loadStandardCursors(std::string const& name, int size);
     std::vector<SP<SXCursors>>      loadAllFromDir(std::string const& path, int size);
+    void                            syncGsettings();
 
     int                             lastLoadSize = 0;
     std::string                     themeName    = "";

src/meson.build

@@ -28,6 +28,7 @@ executable('Hyprland', src,
     xcb_xfixes_dep,
     backtrace_dep,
     epoll_dep,
+    gio_dep,
     udis86,
 
     dependency('pixman-1'),