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136 lines
4.8 KiB
C++
136 lines
4.8 KiB
C++
/*************************************************************************/
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/* freedesktop_portal_desktop.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "freedesktop_portal_desktop.h"
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#ifdef DBUS_ENABLED
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#include "core/error/error_macros.h"
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#include "core/os/os.h"
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#include "core/string/ustring.h"
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#include "dbus-so_wrap.h"
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#include "core/variant/variant.h"
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#define BUS_OBJECT_NAME "org.freedesktop.portal.Desktop"
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#define BUS_OBJECT_PATH "/org/freedesktop/portal/desktop"
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#define BUS_INTERFACE_SETTINGS "org.freedesktop.portal.Settings"
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static bool try_parse_variant(DBusMessage *p_reply_message, int p_type, void *r_value) {
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DBusMessageIter iter[3];
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dbus_message_iter_init(p_reply_message, &iter[0]);
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if (dbus_message_iter_get_arg_type(&iter[0]) != DBUS_TYPE_VARIANT) {
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return false;
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}
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dbus_message_iter_recurse(&iter[0], &iter[1]);
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if (dbus_message_iter_get_arg_type(&iter[1]) != DBUS_TYPE_VARIANT) {
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return false;
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}
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dbus_message_iter_recurse(&iter[1], &iter[2]);
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if (dbus_message_iter_get_arg_type(&iter[2]) != p_type) {
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return false;
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}
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dbus_message_iter_get_basic(&iter[2], r_value);
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return true;
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}
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bool FreeDesktopPortalDesktop::read_setting(const char *p_namespace, const char *p_key, int p_type, void *r_value) {
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if (unsupported) {
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return false;
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}
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DBusError error;
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dbus_error_init(&error);
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DBusConnection *bus = dbus_bus_get(DBUS_BUS_SESSION, &error);
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if (dbus_error_is_set(&error)) {
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dbus_error_free(&error);
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unsupported = true;
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if (OS::get_singleton()->is_stdout_verbose()) {
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ERR_PRINT(String() + "Error opening D-Bus connection: " + error.message);
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}
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return false;
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}
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DBusMessage *message = dbus_message_new_method_call(
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BUS_OBJECT_NAME, BUS_OBJECT_PATH, BUS_INTERFACE_SETTINGS,
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"Read");
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dbus_message_append_args(
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message,
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DBUS_TYPE_STRING, &p_namespace,
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DBUS_TYPE_STRING, &p_key,
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DBUS_TYPE_INVALID);
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DBusMessage *reply = dbus_connection_send_with_reply_and_block(bus, message, 50, &error);
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dbus_message_unref(message);
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if (dbus_error_is_set(&error)) {
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dbus_error_free(&error);
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dbus_connection_unref(bus);
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if (OS::get_singleton()->is_stdout_verbose()) {
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ERR_PRINT(String() + "Error on D-Bus communication: " + error.message);
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}
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return false;
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}
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bool success = try_parse_variant(reply, p_type, r_value);
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dbus_message_unref(reply);
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dbus_connection_unref(bus);
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return success;
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}
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uint32_t FreeDesktopPortalDesktop::get_appearance_color_scheme() {
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if (unsupported) {
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return 0;
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}
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uint32_t value = 0;
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read_setting("org.freedesktop.appearance", "color-scheme", DBUS_TYPE_UINT32, &value);
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return value;
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}
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FreeDesktopPortalDesktop::FreeDesktopPortalDesktop() {
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#ifdef DEBUG_ENABLED
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int dylibloader_verbose = 1;
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#else
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int dylibloader_verbose = 0;
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#endif
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unsupported = (initialize_dbus(dylibloader_verbose) != 0);
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}
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#endif // DBUS_ENABLED
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